This document provides an overview of biopsy procedures. It defines a biopsy as the removal of tissue from a living organism for microscopic examination and diagnosis. The history of biopsies is discussed, noting their introduction in the late 19th century as an essential diagnostic tool. Different types of biopsies are described, including incisional, excisional, punch and fine needle aspiration biopsies. Indications for biopsies and contraindications are outlined. The document provides details on performing biopsies, including selecting the biopsy area, preparing the surgical field, using local anesthesia, handling specimens, and suturing wounds. Potential artifacts and complications of biopsies are also reviewed.
ORAL BIOPSY:
Introduction
Definition
History
Uses of Oral Biopsy
Indication for Oral Biopsy
Contraindication of Oral Biopsy
Precaution in Oral Biopsy
Armamentarium
Types of Oral Biopsy
Special consideration
Biopsy Arifact
Obtaining a Good Oral Biopsy
Complication of Oral Biopsy
Conclusion
Fibro-osseous lesions of the jaws
Fibrous dysplasia
Cemento-osseous dysplasia
Focal cemento-osseous dysplasia
Periapical cemento-osseous dysplasia
Florid cemento-osseous dysplasia
Ossifying fibroma
Juvenile aggressive ossifying fibroma
Cherubism
Fibro-osseous lesions (FOL) are characterized by replacement of normal bone architecture by collagen fibers and fibroblasts containing calcified tissue.
They include a wide variety of lesions of developmental, dysplastic and neoplastic origins with clinical and radiographic presentation and behavior.
Because of the histological similarities between diverse diseases, proper diagnosis requires correlation of history, clinical and radiographic findings.Fibrous Dysplasia
2. Reactive (dysplastic lesions arising in the tooth-bearing area (presumably of periodontal origin).
a. Periapical cemento-osseous dysplasia
b. Focal cemento-osseous dysplasia
c. Florid cemento-osseous dysplasia
3. Fibro-osseous neoplasms (widely designated as cementifying fibroma, ossifying fibroma or cemento-ossifying fibroma.Bone dysplasias
a. Fibrous dyspla i. Monostoticii. Polyostotic
iii. Polyostotic with endocrinopathy (McCune-Albright)
iv Osteofibrous dysplasia
b. Osteitis deformansc. Pagetoid heritable bone dysplasias of childhood
d. Segmental odontomaxillary dysplasia
2. Cemento-osseous dysplasias
a. Focal cemento-osseous dysplasia b. Florid cemento-osseous dysplasia
3.Inflammatory/reactive processes
a. Focal sclerosing osteomyelitisb. Diffuse sclerosing osteomyelitis
c. Proliferative periostitis
4. Metabolic Disease: hyperparathyroidism
5. Neoplastic lesions (Ossifying fibromas)
a. Ossifying fibromab. Hyperparathyroidism jaw lesion syndrome
c. Juvenile ossifying fibroma i. Trabecular typeii. Psammomatoid type
d. Gigantiform cementomas
Dr. Ahmed M. Adawy, Professor Emeritus, Dep. Oral & Maxillofacial Surgery. Former Dean, Faculty of Dental Medicine
Al-Azhar University. Oral biopsy; why, when, and how? Biopsy is the removal of the tissue from the living organism for the purpose of microscopic examination and diagnosis. Looking for a definitive diagnosis is the aim of biopsy. Types of Biopsy include incisional, excisional, drill, fine needle and frozen section biopsy.
ORAL BIOPSY:
Introduction
Definition
History
Uses of Oral Biopsy
Indication for Oral Biopsy
Contraindication of Oral Biopsy
Precaution in Oral Biopsy
Armamentarium
Types of Oral Biopsy
Special consideration
Biopsy Arifact
Obtaining a Good Oral Biopsy
Complication of Oral Biopsy
Conclusion
Fibro-osseous lesions of the jaws
Fibrous dysplasia
Cemento-osseous dysplasia
Focal cemento-osseous dysplasia
Periapical cemento-osseous dysplasia
Florid cemento-osseous dysplasia
Ossifying fibroma
Juvenile aggressive ossifying fibroma
Cherubism
Fibro-osseous lesions (FOL) are characterized by replacement of normal bone architecture by collagen fibers and fibroblasts containing calcified tissue.
They include a wide variety of lesions of developmental, dysplastic and neoplastic origins with clinical and radiographic presentation and behavior.
Because of the histological similarities between diverse diseases, proper diagnosis requires correlation of history, clinical and radiographic findings.Fibrous Dysplasia
2. Reactive (dysplastic lesions arising in the tooth-bearing area (presumably of periodontal origin).
a. Periapical cemento-osseous dysplasia
b. Focal cemento-osseous dysplasia
c. Florid cemento-osseous dysplasia
3. Fibro-osseous neoplasms (widely designated as cementifying fibroma, ossifying fibroma or cemento-ossifying fibroma.Bone dysplasias
a. Fibrous dyspla i. Monostoticii. Polyostotic
iii. Polyostotic with endocrinopathy (McCune-Albright)
iv Osteofibrous dysplasia
b. Osteitis deformansc. Pagetoid heritable bone dysplasias of childhood
d. Segmental odontomaxillary dysplasia
2. Cemento-osseous dysplasias
a. Focal cemento-osseous dysplasia b. Florid cemento-osseous dysplasia
3.Inflammatory/reactive processes
a. Focal sclerosing osteomyelitisb. Diffuse sclerosing osteomyelitis
c. Proliferative periostitis
4. Metabolic Disease: hyperparathyroidism
5. Neoplastic lesions (Ossifying fibromas)
a. Ossifying fibromab. Hyperparathyroidism jaw lesion syndrome
c. Juvenile ossifying fibroma i. Trabecular typeii. Psammomatoid type
d. Gigantiform cementomas
Dr. Ahmed M. Adawy, Professor Emeritus, Dep. Oral & Maxillofacial Surgery. Former Dean, Faculty of Dental Medicine
Al-Azhar University. Oral biopsy; why, when, and how? Biopsy is the removal of the tissue from the living organism for the purpose of microscopic examination and diagnosis. Looking for a definitive diagnosis is the aim of biopsy. Types of Biopsy include incisional, excisional, drill, fine needle and frozen section biopsy.
Benign, locally aggressive tumor of odontogenic epithelium, Previously called adamantinoma, Second most common odontogenic tumor after odontoma, Mandible is most common site, Usually asymptomatic and can be found incidentally on routine dental examinations
Introduction
Epidemiology
Etiology
Manifestations
TNM staging
Squamous cell carcinoma is defined as malignant epithelial neoplasm exhibiting squamous differentiation as characterised by the formation of keratin and/or the presence of intercellular bridges.
( Pindborg et al, 1997).
Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.
Benign, locally aggressive tumor of odontogenic epithelium, Previously called adamantinoma, Second most common odontogenic tumor after odontoma, Mandible is most common site, Usually asymptomatic and can be found incidentally on routine dental examinations
Introduction
Epidemiology
Etiology
Manifestations
TNM staging
Squamous cell carcinoma is defined as malignant epithelial neoplasm exhibiting squamous differentiation as characterised by the formation of keratin and/or the presence of intercellular bridges.
( Pindborg et al, 1997).
Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.
BACTERIAL INFECTCTIONS OF ORAL CAVITY i /certified fixed orthodontic courses ...Indian dental academy
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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.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
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
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
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2. WHAT IS A BIOPSY?
Biopsy is derived from a Greek word
(By-op-see) = Bio – meaning LIFE and
Opsy – TO LOOK(Vision)
Biopsy is the removal of tissue from a
living organism for the purpose of
microscopic examination and
diagnosis.
3. 1870, Ruge and Joham Vert in Berlin
introduced surgical biopsy as an essential
tool for diagnosis.
1889, Emarch put forward an argument that
confirmations should be made before
surgeries for malignancies.
Williams halsted 1st introduced this principle
in United States.
1941, study of exfoliated cells from female
genital tract is done by Papanicolaou.
HISTORICAL PERSPECTIVE
6. CHARACTERISTICS OF LESIONS THAT RAISE THE
SUSPICION OF MALIGNANCY
Growth rate– lesion exhibits rapid growth
Bleeding— lesion bleeds on gentle
manipulation
Induration– lesion and surrounding tissue is
firm to the touch
Fixation– lesion feels attached to adjacent
structures
7. CHARACTERISTICS OF LESIONS THAT RAISE THE
SUSPICION OF MALIGNANCY
Erythroplakia—lesion is totally red or has
speckled red appearance
Ulceration—lesion is ulcerated or presents
as an ulcer
Duration— lesion has persisted for more
than 2 weeks
8.
9. INDICATION FOR BIOPSY
Persistent hyperkeratosis changes in surface
tissue (ex: lips or oral mucosa)
Lesion that interfere with local function
(ex :fibroma)
Any inflammatory lesion that does not
respond to local treatment after 10 to 14
days (that is after removing local irritant)
10. INDICATION FOR BIOPSY
Bone lesions not specifically identified by
clinical and radiographic finding.
Any lesion persists for more than 2 weeks
with no apparent etiology basis.
Any lesion that has the characteristics of
malignancy .
11. WHEN IS ORAL BIOPSY NOT
NEEDED?
There is no need to biopsy normal structures.
There is no need to biopsy for inflammatory or infectious
lesions that respond to specific local treatments, as
pericoronitis, gingivitis or periodontal abscesses.
No incisional biopsies should be performed on suspected
angiomatous lesions.
12. Anticoagulant therapy
Over-whelming sepsis
Severe impaired lung function
Uncontrolled bleeding.
Uncooperative patient
Local infection near the site
CONTRA-INDICATIONS
13. To confirm a diagnosis made on clinical
findings.
To determine the treatment plan
Valuable self teaching diagnostic aid.
As a medical record
OBJECTIVES OF BIOPSY
14. CLASSIFICATION OF BIOPSY
According to the procedures applied, oral biopsies can be
classified by:
a) Features of the lesion:
• Direct biopsy: when the lesion is located on the oral
mucosa and can be easily accessed with a scalpel from
the mucosal surface.
• Indirect biopsy: when the lesion is covered by an
apparently normal oral mucosa.
15. b) Area of surgical removal:
• Incisional biopsy: consists of the removal of a
representative sample of the lesion and normal adjacent
tissue in order to make a definitive diagnosis before
treatment.
• Excisional biopsy: is aimed at the complete surgical
removal of the lesion for diagnostic and therapeutic
purposes. This procedure is elective when the size and
location of the lesion allows for a complete removal of
the lesion and a wide margin of surrounding healthy
tissue.
16. c) By the timing of the biopsy/ Clinical timing of
sampling:
• Pre-operative
• Intra-operative
• Post-operative
d) Purpose of the biopsy.
Diagnostic Biopsy
Experimental Biopsy
18. STEPS OF BIOPSY
1.SELECTION OF AREA OF BIOPSY
2.PREPARATION OF SURGICAL FIELD
3.LOCAL ANASTHESIA
4.INCISION
5.HANDLING OF SPECIMEN
6.SUTURING OF THE RESULTING WOUND
19. If a lesion is large or has
different characteristics in
various locations more than one
area may need to be sampled
INCISIONAL BIOPSY
20. Incision should extend from the ulceration out onto clinically normal
tissue
Grasp area to be removed with forceps and make an elliptical incision from the
centre out onto clinically normal tissue: wound after removal of incised tissue:
suturing completed
21. INCISIONAL BIOPSY
Indications:
Size limitations
Hazardous location of the lesion
Great suspicion of malignancy
Technique:
Representative areas are biopsied in a wedge fashion.
Margins should extend into normal tissue on the deep
surface.
Necrotic tissue should be avoided.
A narrow deep specimen is better than a broad shallow
one.
22. DISADVANTAGES:
1. Crush, splits and haemorrhage are the
artefacts most frequently found in
incisional oral biopsies.
2. Theoretical seeding of cancer cells into
the adjoining tissues.
23. Excisional Biopsy
The entire lesion with 2 to
3mm of normal appearing
tissue surrounding the
lesion is excised if
benign.
24. EXCISIONAL BIOPSY
An excisional biposy implies the complete removal
of the lesion.
Indications:
Should be employed with small lesions. Less than 1cm
The lesion on clinical exam appears benign.
When complete excision with a margin of normal tissue
is possible without mutilation.
25. EXCISIONAL BIOPSY
Technique:
The entire lesion with 2 to 3mm of normal
appearing tissue surrounding the lesion is
excised if benign.
28. Advantages :
Ease of technique
Sutures may not be required if small diameter
punch
May produce a more satisfactory specimen in
bound down tissues (e.g. hard palate)
Drawbacks:
May not be adequate for biopsy of deeper
pathology
May be difficult to biopsy freely movable tissues
(e.g. soft palate, floor of mouth)
29. CORE BIOPSY
Fine needle biopsy has been established
as a safe procedure and is routinely
performed under local anaesthesia. Many
pathologists believe that for histologic
study, core tissue is more useful than
cytologic material
30. Core needle biopsy (CNB) has emerged as an important
sampling method in the diagnosis of musculoskeletal
tumours
31. FINE NEEDLE ASPIRATION CYTOLOGY
It is the “Technique of aspiration of cells/
fluid/ tissue fragments using a fine needle for
examination under a microscope”
32. ADVANTAGES
1. The technique is relatively painless,
produces speedy results.
2. It is an inexpensive technique.
3. It requires little equipment.
4. The technique can be done as an out
patient or a bed side procedure.
5. There is no problem with wound healing.
6. The technique is readily repeatable
33. INDICATIONS
1. Non palpable lesions, or area difficult to biopsy
but can be localized by CT, MRI, Ultrasound.
2. To rule out vascular lesions prior to open
surgery.
3. In cases where Biopsy is contraindicated on
medical background.
4. Used as a diagnostic screening test at
community level for head and neck masses.
5. Indicated for known tumors to assess effect of
treatment.
6. Used to obtain tissue for specific studies.
36. BRUSH BIOPSY
Diagnosis of oral epithelial dysplasia has
traditionally been based upon histopathological
evaluation of a full thickness biopsy specimen
from lesional tissue.
It has recently been proposed that cytological
examination of “brush biopsy” samples is a non-
invasive method of determining the presence of
cellular atypia, and hence the likelihood of oral
epithelial dysplasia.
37.
38. Exfoliative Cytology
It is a quick and simple procedure, is an
important alternative to biopsy in certain
situations. In exfoliative cytology, cells
shed from body surfaces, such as the
inside of the mouth, are collected and
examined. This technique is useful only for
the examination of surface cells and often
requires additional cytological analysis to
confirm the results.
39. DANGERS OF BIOPSY
Spreading of infection
Haemorrhage
Infection
Operative trauma
44. BIOPSY DATA SHEET
PATIENT DATA
HISTORY
CLINICAL DESCRIPTION
NATURE OF BIOPSY
RADIOGRAPHS & PHOTOGRAPHS
DISCRIPTION OF BIOPSY SPECIMEN
45. BIOPSY REPORT
IT SHOULD INCLUDE DIAGNOSIS AS
WELL AS A COMPLETE MICROSCOPIC
DESCRIPTION
46. ARTIFACT = Artificial (man made) product
Artifacts are alteration in the tissue morphology
that results from various forms of mechanical,
chemical, or thermal insult to the tissue specimens
removed for diagnostic purposes, anywhere from
fixation to processing to staining. Numerous types
of artefacts can affect the biopsy specimen.
47. CLASSIFICATION
PRE BIOPSY ARTIFACTS:
They are introduced prior to the collection of the tissue
BIOPSY ARTIFACTS
Injection of L.A. into the lesion.
Injection Artifacts
Improper handling of the tissue
Errors during manipulation of tissue
Forceps/ Squeeze Artifact
Problems in orienting excised tissue
Heat Artefact(Fulguration Artifact)
Foreign Bodies or Starch Artifact.