This document discusses the management of localized and locally advanced prostate cancer. It covers risk stratification methods including D'Amico, NCCN and EAU classifications. Treatment options for localized prostate cancer include active surveillance, radical prostatectomy, external beam radiotherapy and brachytherapy. Patient selection factors, follow-up protocols and potential complications are reviewed for different treatment modalities. Risk assessment tools like Partin tables, Kattan and Briganti nomograms are also described to guide treatment decisions in localized prostate cancer.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
263778731218 Abortion Clinic /Pills In Harare ,ABORTION WOMEN’S CLINIC +27730423979 IN women clinic we believe that every woman should be able to make choices in her pregnancy. Our job is to provide compassionate care, safety,affordable and confidential services. That’s why we have won the trust from all generations of women all over the world. we use non surgical method(Abortion pills) to terminate…Dr.LISA +27730423979women Clinic is committed to providing the highest quality of obstetrical and gynecological care to women of all ages. Our dedicated staff aim to treat each patient and her health concerns with compassion and respect.Our dedicated group ABORTION WOMEN’S CLINIC +27730423979 IN women clinic we believe that every woman should be able to make choices in her pregnancy. Our job is to provide compassionate care, safety,affordable and confidential services. That’s why we have won the trust from all generations of women all over the world. we use non surgical method(Abortion pills) to terminate…Dr.LISA +27730423979women Clinic is committed to providing the highest quality of obstetrical and gynecological care to women of all ages. Our dedicated staff aim to treat each patient and her health concerns with compassion and respect.Our dedicated group of receptionists, nurses, and physicians have worked together as a teamof receptionists, nurses, and physicians have worked together as a team wwww.lisywomensclinic.co.za/
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Prostate carcinoma- localised and locally advanced
1. MANAGEMENT OF LOCALISED
& LOCALLY ADVANCED
PROSTATE CANCER
Dept of Urology
Govt Royapettah Hospital and Kilpauk Medical College
Chennai
1
2. MODERATORS:
Professors:
Prof. Dr. G. Sivasankar, M.S., M.Ch.,
Prof. Dr. A. Senthilvel, M.S., M.Ch.,
Asst Professors:
Dr. J. Sivabalan, M.S., M.Ch.,
Dr. R. Bhargavi, M.S., M.Ch.,
Dr. S. Raju, M.S., M.Ch.,
Dr. K. Muthurathinam, M.S., M.Ch.,
Dr. D. Tamilselvan, M.S., M.Ch.,
Dr. K. Senthilkumar, M.S., M.Ch.
Dept of Urology, GRH and KMC, Chennai.
2
4. NATURAL HISTORY
May be Indolent
Highly aggressive – metastasize quickly and death
One in six men will be diagnosed with prostate cancer in his
lifetime
Only one in 35 men will die from cancer
4
Dept
of
Urology,
GRH
and
KMC,
Chennai.
5. TREATMENT OPTIONS
Conservative
• Active surveillance
• watchful waiting
Radical prostatectomy
Radiotherapy
Hormonal therapy
Focal therapies 5
Dept
of
Urology,
GRH
and
KMC,
Chennai.
6. CRITERIA TO CONSIDER WHEN SELECTING
APPROPRIATE TREATMENT FOR PCA
Tumour’s potential aggressiveness
Patient’s general health/co-morbidities
Patient’s life expectancy
QOL preferences of patient
6
Dept
of
Urology,
GRH
and
KMC,
Chennai.
7. TREATMENT STRATEGIES
Favorable risk profiles may opt
for surveillance strategies
Higher risk can be guided
towards a growing array of
interventions, perhaps applied
in combination as appropriate.
7
Dept
of
Urology,
GRH
and
KMC,
Chennai.
15. PARTIN’S TABLES
Use clinical features
Gleason score
Serum PSA
Clinical stage
To predict the number of percent with the specified PSA,
stage and GS who would have
Organ confined disease
EPE
SV +
LN+ 15
Dept
of
Urology,
GRH
and
KMC,
Chennai.
16. CAPRA SCORE
University of California, San Francisco
Cancer of the Prostate Risk
Assessment (CAPRA) score
Predicts relative rather than absolute
risk for multiple oncologic outcomes
including surgical pathology, BCR,
metastasis, cancer-specific, and
overall survival.
The CAPRA score is categorized into
three risk strata:
0 to 2 indicates low risk
3 to 5 intermediate risk
6 to 10 high risk
16
Dept
of
Urology,
GRH
and
KMC,
Chennai.
17. ROACH FORMULA
EPE = 3/2 X PSA + 10 X (GS-3)
SV + = PSA + 10 X (GS-6)
LN + = 2/3 X PSA + 10 (GS-6)
17
Dept
of
Urology,
GRH
and
KMC,
Chennai.
19. IDENTIFICATION OF INDOLENT TUMOR
1. Epstein criteria – for insignificant tumor
Gleason ≤6
Tumor volume < 0.2ml
Organ confined cancer
PSA density <0.1ng/mL/g
≤2 needle cores +ve (minimum 6 total cores)
<50% in any +ve core
PSA density 0.1 to 0.15 ng/ml/g & cancer < 3mm on all biopsy sample
f/t ratio ≥0.15
19
Dept
of
Urology,
GRH
and
KMC,
Chennai.
20. 2.Kattan nomogram – to identify indolent ca
Based on 20% of low-risk PCa group had “indolent disease” -
Point system from 0 to 200 and includes 7 variables } higher score = indolent PCa
1) pre-treatment PSA
2) clinical stage
3) primary Gleason score
4) secondary Gleason score
5) U/S volume of prostate
6) mm of cancer
7) mm of non-cancer
20
Dept
of
Urology,
GRH
and
KMC,
Chennai.
21. Kattan criteria for indolent PCa
organ confined
<0.5mL tumour volume
Gleason ≤6
21
Dept
of
Urology,
GRH
and
KMC,
Chennai.
22. EVALUATING LIFE EXPECTANCY &
HEALTH STATUS
• G8 screening tool
• CALE
22
Dept
of
Urology,
GRH
and
KMC,
Chennai.
28. TREATMENT OPTIONS
Conservative
• Active surveillance
• watchful waiting
Radical prostatectomy
Radiotherapy
Hormonal therapy
Focal therapies 28
Dept
of
Urology,
GRH
and
KMC,
Chennai.
29. ACTIVE SURVEILLANCE
Delayed primary therapy until there is evidence of progression
Intent to cure persists
Goal is to distinguish clinically insignificant PCa from life-threatening PCa
Avoid overRx while administering curative Rx
“Active surveillance aims to avoid unnecessary treatment in men with
clinically localised PCa who do not require immediate treatment, but at
the same time achieve the correct timing for curative treatment in those
who eventually do.”
29
Dept
of
Urology,
GRH
and
KMC,
Chennai.
30. PATIENT SELECTION FOR ACTIVE SURVEILLANCE
Low – intermediate risk (favourable)
PSA < 10
Life expectancy >10 years
Upto T2a
30
Dept
of
Urology,
GRH
and
KMC,
Chennai.
31. CANDIDATES NOT SUITABLE FOR AS
Family history of Ca – P
African - American men
- High risk for disease progression
- Worse clinico pathological features
Men With BRCA mutation
- Advanced tumor stage at presentation
- High gleason
- Shorter median survival 31
Dept
of
Urology,
GRH
and
KMC,
Chennai.
32. FOLLOW UP IN ACTIVE SURVEILLANCE
Semi annual
PSA
DRE
Annual
Biopsy 32
Dept
of
Urology,
GRH
and
KMC,
Chennai.
33. RECLASSIFICATION CRITERIA FOR TREATMENT IN AS
Disease progression
Gleason pattern 4 or 5
3 or more biopsy core +ve
>50% of the core +ve
Increase in disease extent
Stage migration
Patient preference 33
Dept
of
Urology,
GRH
and
KMC,
Chennai.
34. Untoward consequence of AS
Need multiple biopsies
Infection / Erectile dysfunction
May complicate subsequent attempt of NS surgery
Delay treatment until window of opportunity for cure had closed
% of curable ca at the time of progression – 30 -90%
34
Dept
of
Urology,
GRH
and
KMC,
Chennai.
35. WATCHFUL WAITING
Monitoring until progression that requires palliative treatment
No intent to cure
Goal is to limit morbidity from disease & therapy
“Watchful waiting refers to conservative management for patients deemed
unsuitable for curative treatment right from the outset, and patients are ‘watched’
for the development of local or systemic progression with (imminent) disease-
related complaints, at which stage they are then treated palliatively according to
their symptoms, in order to maintain QoL.”
35
Dept
of
Urology,
GRH
and
KMC,
Chennai.
36. CANDIDATES FOR WATCHFUL WAITING
Any T
Any PSA
Gleason < 7
Life expectancy < 10 years
36
Dept
of
Urology,
GRH
and
KMC,
Chennai.
37. ACTIVE
SURVEILLANCE
WATCHFUL WAITING
Treatment intent Curative Palliative
Follow up Predefined schedule Patient specific
Assessment/markers
used
DRE, PSA, re-biopsy,
mpMRI
Not predefined
Life expectancy >10 years < 10 years
Aim Minimise treatment
related toxicity without
compromising survival
Minimise treatment
related toxicity
Comments Low risk patients Can apply to patients
with all stages 37
Dept
of
Urology,
GRH
and
KMC,
Chennai.
38. 2.RADICAL PROSTATECTOMY
Complete removal of prostate, seminal vesicle with PLND
Still - gold standard treatment for Ca P
- HT / CT Never curative
- Not All Ca cells eradicated by RT
- If gland remain in situ – possibility of new Ca from retained
epithelium
38
Dept
of
Urology,
GRH
and
KMC,
Chennai.
39. Possibility of cure with minimal
collateral damage
More accurate pathological
staging
If treatment failure – Curative
salvage RT
Significantly reduces tumor
progression, mets, Ca specific
mortality than WW
Possibility of incomplete resection
- if not performed properly
- If tumor not confined to gland
Risk of erectile dysfunction
Risk of Urinary incontinence
Advantage Disadvantage
39
Dept
of
Urology,
GRH
and
KMC,
Chennai.
40. Patient Selection:
Good GC
Life expectancy >10yrs
Tumor biologically significant and completely resectable
40
Dept
of
Urology,
GRH
and
KMC,
Chennai.
41. TRIFECTA
Priorities of Patients with Ca P
Want to survive – Tumor Clearance
Want to remain continent
Want to preserve their potency
41
Dept
of
Urology,
GRH
and
KMC,
Chennai.
42. APPROACH - A. PERINEAL
Acceptable approach
Advantage
Less bleeding
Shorter operative time than
retropubic approach
Disadvantage
- No access for PLND
- High rate of rectal injury and
post op fecal incontinence
- Difficult to spare Cavernosal N
42
Dept
of
Urology,
GRH
and
KMC,
Chennai.
43. 2.RETROPUBIC
Wide exposure
Able to perform PLND / Preserve Cavernosal N
Less chance of rectal injury
Less risk of +ve tumor margin
43
Dept
of
Urology,
GRH
and
KMC,
Chennai.
44. 3.LAPAROSCOPIC
Better visualisation
Less bleeding / Need of postop analgesics
Early recovery / Less hospital stay
Disadvantage
High risk of vascular, ureteric, bowel injury while PLND
Hemostasis in NVB – difficult without thermal injury
Emergency / readmision – more common
44
Dept
of
Urology,
GRH
and
KMC,
Chennai.
45. 4.ROBOTIC
Easy to tie sutures and vesicourethral anastomosis
3D vision
Increased / Enhanced dexterity
Disadvantage
Availabilty / Cost
Increase rate of incisional hernias 45
Dept
of
Urology,
GRH
and
KMC,
Chennai.
46. Complications
Sexual dysfunction (20- 100%)
Urinary Incontinence (4-70%)
Stricture (0-12%)
Mortality (<1%)
46
Dept
of
Urology,
GRH
and
KMC,
Chennai.
47. RADIATION THERAPY
EBRT
Heavy Particle Beams
IMRT
IGRT
3D CRT
Sterotactic
BRACHYTHERAPY
Low Dose BT
High Dose BT 47
Dept
of
Urology,
GRH
and
KMC,
Chennai.
48. DOSAGE
Currently doses of 76 to 80 Gy or more - improve cancer control
Low-risk patients - 70 to 72 Gy
Intermediate-risk patients - 75 to 76 Gy
High-risk patients - 80 Gy or more
Doses above 80 Gy - not beneficial. 48
Dept
of
Urology,
GRH
and
KMC,
Chennai.
49. EBRT
beams of gamma radiation, usually photons, directed at the prostate and
surrounding tissues through multiple fields
3D-CRT
To minimize radiation injury to the bladder and rectum, in which a computer alters
the radiation beams to focus the radiation dose to the region of the prostate gland
IMRT
provide localization of the radiation dose to geometrically complex fields
IGRT
imaging techniques are used to guide IMRT to the target area
49
Dept
of
Urology,
GRH
and
KMC,
Chennai.
50. RADICAL EBRT
Age<70 yrs
Stage T1b, T2, T3
LN involvement detected by nodal sampling
Risk of LN involvement ≥ 15%
Documented SVI
Gleason score ≥6
PSA ≥ 20 ng/ml 50
Dept
of
Urology,
GRH
and
KMC,
Chennai.
51. RT – SIDE EFFECTS
Injury to the microvasculature of the bladder, rectum, striated
sphincter muscle, and urethra. (>50Gy)
Urinary incontinence
Cystitis
Proctitis
51
Dept
of
Urology,
GRH
and
KMC,
Chennai.
52. ERECTILE DYSFUNCTION (50%)
Injury to the vasculature of the cavernous nerves and to the corpora
cavernosa of the penis
begin about 1 year after the completion of treatment
PDE5 inhibitors are useful in ameliorating the erectile dysfunction associated
with radiotherapy
52
Dept
of
Urology,
GRH
and
KMC,
Chennai.
53. CONTRAINDICATIONS
Prior TURP - is a relative contraindication to brachytherapy / EBRT
- prostate does not hold the seeds well
- Associated with an increased risk of urethral stricture
Inflammatory bowel disease
Prior RT
53
Dept
of
Urology,
GRH
and
KMC,
Chennai.
54. Cancer cells are not killed immediately after radiation.
They sustain lethal DNA damage but do not die until they next
attempt to enter into cell division.
The PSA level gradually decreases for up to 2 to 3 years after the
completion of radiotherapy.
Accordingly, the PSA level is usually monitored at 6-month
intervals until it reaches a nadir.
ENDPOINTS FOR TREATMENT SUCCESS OR
FAILURE
54
Dept
of
Urology,
GRH
and
KMC,
Chennai.
55. PSA BOUNCE
Due to post radiation prostatitis
Seen in 20% of patients
Usually during first 2 years
More common with brachytherapy
PSA bounce of >1.4ng/ml has been associated with
biochemical failure, metastasis & prostate cancer death
55
Dept
of
Urology,
GRH
and
KMC,
Chennai.
56. 10 year cure rate – 50% for localized prostate cancer
5-year progression-free probability - 70% to 85%
TREATMENT RESULTS OF EXTERNAL BEAM
RADIOTHERAPY
56
Dept
of
Urology,
GRH
and
KMC,
Chennai.
57. Radioactive sources (seeds or needles) are implanted directly
into the prostate gland
Easy to perform
Performed under general or regional anesthesia.
Permanent implants (LDR)
Iodine 125
Palladium 103
Cesium 137
Temporary implants (HDR)
Iridium 192
BRACHYTHERAPY
57
Dept
of
Urology,
GRH
and
KMC,
Chennai.
59. Urinary symptoms
Urinary retention
Urinary incontinence
Erectile dysfunction
Impotence
Less common
Proctitis and rectal injury
SIDE EFFECTS OF BRACHYTHERAPY
59
Dept
of
Urology,
GRH
and
KMC,
Chennai.
60. ADJUVANT VS SALVAGE RT
Extensive extracapsular
tumor extension
Multiple or broad-based
positive surgical margins
Seminal vesicle invasion
Lymph node metastases.
Focally positive margins or
minimal extracapsular tumor
extension
Monitoring PSA every 4
months with early salvage
therapy being initiated when
the PSA reaches 0.2 ng/ mL
ADJUVANT RT SALVAGE RT
60
Dept
of
Urology,
GRH
and
KMC,
Chennai.
61. Adjuvant Radiotherapy
Administered to the bed of the prostate gland
Dose - 64 Gy to 72 Gy.
Wait at least 3 to 4 months after surgery
Radiation to the whole pelvis is usually discouraged because of the
higher risk for bowel complications
61
Dept
of
Urology,
GRH
and
KMC,
Chennai.
62. If salvage radiotherapy is planned, it should be initiated before the
PSA level rises much above 0.5 ng/mL.
Patients most likely to have favorable responses to salvage
radiotherapy are those with
PSA recurrence long after surgery
Slowly rising PSA level
Low-grade tumor
No seminal vesicle invasion or lymph node metastases.
SALVAGE RT
62
Dept
of
Urology,
GRH
and
KMC,
Chennai.
63. Older men
Significant medical comorbidities precluding the use of
curative therapy
Those who do not wish to undergo curative therapy
PRIMARY HORMONE THERAPY
63
Dept
of
Urology,
GRH
and
KMC,
Chennai.
64. Hormone therapy is never curative;
Many patients experience long-term remissions.
Bilateral orchiectomy and estrogen administration have largely
been replaced by luteinizing hormone–releasing hormone
analogs.
Antiandrogens produce less sexual dysfunction and
osteoporosis
But have a greater risk for adverse cardiovascular
complications
HORMONAL THERAPY
64
Dept
of
Urology,
GRH
and
KMC,
Chennai.
65. FOCAL THERAPIES
Cryoablation
High Intensity Focussed Ultrasound
Radiofrequency ablation
65
Dept
of
Urology,
GRH
and
KMC,
Chennai.
66. Cryoablation destroys prostate tissue through freezing.
Cryoablation has been used as primary treatment for salvage after radical
prostatectomy or radiotherapy.
The initial results were poor with incomplete eradication of the tumor and high
complication rates
Urinary retention
Incontinence
Urinary-intestinal fistula
Stricture
Chronic rectal or perineal pain
Erectile dysfunction
With technical modifications, the complication rates have decreased, cancer
control has improved, and the procedure is better tolerated
CRYOABLATION
66
Dept
of
Urology,
GRH
and
KMC,
Chennai.
67. It is minimally invasive
It does not involve radiation exposure or surgical risk
Repeated treatments are possible
Preservation of potency is possible with cavernous nerve
warming.
ADVANTAGES OF CRYOABLATION
67
Dept
of
Urology,
GRH
and
KMC,
Chennai.
68. Kill cancer cells selectively.
Radiofrequency interstitial tumor ablation–induced
hyperthermia has been investigated as a treatment of the
primary tumor, in combination with radiotherapy, and for
salvage after radiotherapy failure
RADIOFREQUENCY INTERSTITIAL TUMOR
ABLATION
68
Dept
of
Urology,
GRH
and
KMC,
Chennai.
69. office-based treatment
can be repeated.
Careful and constant monitoring is critical to limit the risk of
damage to normal tissue.
ADVANTAGES
69
Dept
of
Urology,
GRH
and
KMC,
Chennai.
70. Acoustic energy can be used with ultrasound focusing to
generate heat within the prostate gland
Transrectally applied highintensity focused ultrasound (HIFU)
can elevate the tissue temperature of the prostate up to 100°C .
Within several seconds, a lesion develops with a sharp and
predictable volume, leaving the surrounding tissue intact.
Tissue destruction by coagulative necrosis
HIGH-INTENSITY FOCUSED ULTRASOUND
70
Dept
of
Urology,
GRH
and
KMC,
Chennai.
83. ADDITIONAL INVESTIGATIONS
Bone scan
cT3-T4
PSA >20 ng/ml
Gleason score > 8
Pelvic CT or MRI
cT3-T4
Calculated probability
of lymph node
involvement is greater
than 10%
83
Dept
of
Urology,
GRH
and
KMC,
Chennai.
84. TREATMENT OPTIONS
Reserved for low
volume tumors that can
be completely excised
With higher risk of
biochemical failure
RP + PLND ADT + RT
Men with high risk prostate cancer including those with locally
advanced disease – significant risk of disease progression and
cancer specific death if left untreated 84
Dept
of
Urology,
GRH
and
KMC,
Chennai.
85. SURGERY
Select patients with T3 disease – low volume
disease may benefit
Local control
Complete cancer excision
Adjuvant and combined therapy – required
Without secondary treatment, 5 yr biochemical relapse
is higher than 60%
85
Dept
of
Urology,
GRH
and
KMC,
Chennai.
87. ROLE OF NEOADJUVANT ADT
Affects tumor behaviour and biology
Reduction in positive surgical margin in cT1-2
disease
cT3 – current data – do not support benefit of NAD
Clinical downstaging may occur
No difference in pathological downstaging
Similar rates of positive margins
With PSA >20 ng/ml greater PSA free survival
87
Dept
of
Urology,
GRH
and
KMC,
Chennai.
88. NEOADJUVANT CHEMO/CHEMO-HORMONAL RX
Decreased overall positive surgical margins
Pathological downstaging
Decreased biochemical relapse
Decreased local recurrence
88
Dept
of
Urology,
GRH
and
KMC,
Chennai.
89. NEOADJUVANT CHEMO/CHEMO-HORMONAL RX
Two 6-weekly cycles of ketoconazole + doxorubicin
alternating with vinblastine & Estramustine (Pettaway et
al)
4-6 months of ADT + paclitaxel, Estramustine &
carboplatin (Konety et al)
3 cycles of oral Estramustine & Etoposide (Clark et al
Cleveland clinic)
Single agent Docetaxel (Oh et al, Dreicer et al) 89
Dept
of
Urology,
GRH
and
KMC,
Chennai.
90. ADJUVANT RT
Improved biochemical control
Significant reduction in local recurrence
Low risk of metastatic disease
Improved overall survival
Freedom from subsequent ADT
Early adjuvant RT – administered within 3-6 months
of surgery with undetectable PSA
Biochemical free survival: 50-80% at 5 years 90
Dept
of
Urology,
GRH
and
KMC,
Chennai.
91. ADJUVANT RT
Traditionally low dose : 45-60 Gy
Higher dose: >64 Gy – improved 30 month
freedom from failure
91
Dept
of
Urology,
GRH
and
KMC,
Chennai.
92. Treatment benefit primarily seen in – positive surgical
margins
Seminal vesicle invasion – significant risk for distant
metastasis
May not benefit from local or regional RT
SV invasion who achieve a low PSA level (<0.3 ng/ml) after
RP – favourable group, Adj RT may be considered.
EPE without SV invasion – predictor of better outcome
with RT 92
Dept
of
Urology,
GRH
and
KMC,
Chennai.
93. ADJUVANT ADT
Improved overall, cancer specific and progression
free survival
Adj. ADT + RT – improved survival when compared
with adj ADT alone
93
Dept
of
Urology,
GRH
and
KMC,
Chennai.