Anatomy of lymphaticsystem
• Components of the lymphatic system include
1. initial /terminal lymphatic capillaries (absorb
lymph)
2. Collecting lymphatic vessels ( lymph
transport)
3. lymph nodes, lymphatic cells, and a variety of
lymphoid organs
5.
Lymphatic circulation
• Lymphflows through lymph capillaries
(unfiltered lymph) large lymphatic vessels to
lymph nodes (filter lymph) to efferent
lymphatics to 2 major lymphatic channels :
right lymphatic duct and thoracic duct to
venous system
6.
Composition of lymph
•Lymph is clear transparent yellow alkaline fluid
similar to blood plasma
• Transports absorbed fat of digestion in
intestine becomes whitish and is called chyle.
7.
Functions
3 main functions:
• Extracellular fluid drainage :
– ULTRAFILTERATE at capillary level is reabsorbed and
transported back to circulation.
(Macromolecules and intravascular protiens)
• FIRST LINE OF IMMUNE SYSTEM:
– antigens microbes, mutant cells are presented to
lymph nodes
• Fat absorbtion and transport to circulation.
Definition
• Lymphedema isabnormal limb swelling
caused by accumulation of increased amount
of high protein ISF,
• Secondary to defective lymphatic drainage in
presence of normal capillary filteration
12.
Pathophysiology and staging
•Lymphedema :
– Swelling of one or limbs / trunk/genitalia
– Caused by progressive accumulation of protein
rich interstitial fluid.
– Due to impairment of lymphatic vascular function
Primary lymphedema
• Causeis unknown
• Rare
• Classified based on age of onset .
1. Congenital lymphedema (Milroy’s ds)
– Age of onset < 2 years
2. Lymphedema Praecox (Meige’s ds)
– Age 2-35 years (puberty)
3. Lymphedema Tarda
– Onset beyond 35 years
18.
Pathology – PRIMARYLYMPHEDEMA
1. Aplasia – lymphatics not developed at all /
absent . Seen In MIROY’S ds.
2. Hypoplasia – lymphatic channel underdeveloped.
– Vessels and nodes are few in no. and of small diameter
leading to inadequate drainage
– Mc type of abnormality.
3. Heperpalsia – excessive no. of lymphatics with
impaired function.
– Enlarged and distorted lymphatics
19.
Secondary lymphedema
• Mostcommon form
• Causes can be
1. Post traumatic/ tissue damage/surgery
– LN excision
– Radiotherapy
– Burns
– Varicose surgery
2. Malignant ds
– LN mets
– Infiltrative CA
– Lymphoma
3. Venous disorders
– Chronic insufficiency/ venous ulcers/ iv drugs
4. Infections
– FILARIASIS
– CELLULITIS
– TB/ LYMPHADENITIS
5. Inflammation
20.
Clinical features
• EDEMA: excessive protein rich fluid in intersitium
– Pitting edema: initial stages
– Square toes: edema extends to distal feet
– Buffalo hump: dorsum of forefoot involved
– Indurated and fibrotic : late stages
• Skin changes :
– Lichenification / peau d’orange/ eczematous
• Other :
– Heaviness of limb
– Lymphangitis
22.
Complications
1. Infections :lymphangitis
2. Malnutrition and immunodeficiency
– Due to Protien loss
3. Malignancy
– Lymphangiosarcoma
– Scc
– Malignant lymphoma
– Melanoma
• Lymphangiosarcoma –
– Rare
– Long standing lymphedema
– Eg, : Postmastectomy – STEWART TREVES Synd.
– Needs amputation.
LYMPHOSCINTIGRAPHY
• ISOTOPE BASEDSTUDY
• METHOD:
– Tc99m labelled sulfur colloid/ Radioiodinated human
albumin injected into 1st
interdigit space. Taken up by
lymphatics. Monitered by whole body gamma camera 30-
60 min. after injection
– Assesses lymphatic funct. : rate of clearance of radiotracer
i.e ability to transport large radiolabeled protein from
interstitial space to nodal basin to vascular compartment
– Uptake < 0.3% of total dose at 30 min. is diagnostic
– Normal uptake: 0.6%-1.6%
30.
Contrast Lymphangiography
• Invasivestudy
• Cannulation of lymphatics at foot – contrast
injected – visualized under xray / mri/ ct
• Detailed lymphatic anatomy
• Contrast material used – lipidol/ ICG Fluorescent
dye/ Gadolinium based
• Icg lymphangiography uses infrared camera to
detect the fluorescence.
• Reserved for preoperative evaluation.
Multilayered Lymphedema Bandaging
•Maintain tissue hydrostatic pressure
• 2 types of pressure are produced
1. Low resting pressure
2. High working pressure- during muscle
contraction
• Pressure must be graduated
– 100% ankle, 70%foot, 50% midthigh, 40% groin
Patient selection
• StageII/III lymphedema
• Recurrent lymphangitis
• Failed CDT/ Medical therapy
• Contraindication to CDT/
• Association with venous insufficiency
• SEVERE functional impairment
• BMI>30
44.
LYMPHO-VENOUS ANASTOMOSIS
• Consideredfor
– Proximal obstruction with preserved , dilated
distal peripheral lymphatics
– The residual dilated lymphatics are anastomosed
with nearby veins/ harvested lymphatic channel
– Commonly done for extremity lymphedema
Post axillary lymphadenectomy/ inguinal or pelvic
lymphadenectomy
46.
Prior localization of
lymphaticscan be done with
ICG mapping and lymphatics
visualized intraoperatively by
distal injection of isosulphan
blue dye.
LYMPHATICOVENOUS BYPASS
47.
VLNT
(a) Vascularized
lymph node
transferfrom
supraclavicular
region;
(b) vascularized
lymph node
transfer to the
ankle.
Transfer of functional lymph nodes with their blood vessels to a
diseased area where native nodes have been removed and
restoring their blood supply through microvascular anastomosis
to recipient site blood vessels
48.
HOW DOES VLNTWORKS ?
• LYMPHANGIOGENESIS- promots growth and
connection of new lymphatics
• Transplanted LN acts as lymph pump
Diagnosis
• Night bloodexamination to detect microfilarie
• Immuno- chromatographic card test
• Ultrasound for locating adult worms
– (negative once lymphedema establishes)
58.
Management
• DEC- Diethylcarbamazine
–Microfilaricidal + adult worms
– Dose – 6mg/kg wt x 12 day regime
Or single dose regime
– Only effective in acute phase of disease when
lymphedema not established
• Combination:
– DEC+ ALBENDAZOL
– DEC + ALBENDAZOL+ IVERMECTIN
59.
Surgical Management
• Indications:failed conservative treatment
• Excisional: Charles, Homans procedures
• Physiologic: Lymphovenous bypass, VLNT
• Liposuction: for solid-phase lymphedema
• Post-op care is critical
60.
Prognosis & Follow-Up
•Chronic and progressive condition
• Requires lifelong management
• Patient education is essential
61.
Summary
• Early diagnosisimproves outcomes
• Conservative management is first-line
• Surgery reserved for advanced or refractory
cases
• Multidisciplinary approach is key
When pathogenic organismsenter the lymphatic channels
local inflammation and subsequent infection ensue,
manifesting as red streaks on the skin.
The inflammation or infection then extends proximally
toward regional lymph nodes.
Bacteria can grow rapidly in the lymphatic system
Etiology
• Species ofgroup A beta-hemolytic streptococci (GABHS) (MC)
• Staphylococcus aureus
• Pseudomonas species
• Streptococcus pneumoniae
• Pasteurella multocida
• Gram-negative rods, gram-negative bacilli, and fungi
• Aeromonas hydrophila
• Wuchereria bancrofti
Diabetes, immunodeficiency, varicella, chronic steroid use, or other
systemic illnesses have increased risk of developing serious or rapidly
spreading lymphangitis.
67.
Nodular lymphangitis
Superficial inoculationwith one of the following organisms:
– Sporothrix schenckii
– Nocardia brasiliensis
– Mycobacterium marinum
– Leishmania panamensis
– L guyanensis
– Francisella tularensis
68.
Prognosis
• With uncomplicatedlymphangitis is good.
• Antimicrobial regimens are effective in more than 90% of
cases.
• Without appropriate antimicrobial therapy cellulitis may
extend along the channels; necrosis and ulceration may occur.
• Morbidity and mortality is related to the underlying infection.
• Mortality associated with lymphangitis alone, lymphangitis
caused by GABHS can lead to bacteremia, sepsis, and death.
69.
Clinical presentation
• H/ominor trauma to an area of skin distal to the site of
infection
• Children with lymphangitis: fever, chills, and malaise,
headache, loss of appetite, muscle aches.
• H/o recent cut or abrasion or of an area of skin
• Can progress rapidly to bacteremia and disseminated
infection and sepsis
71.
Physical examination
• Erythematousand irregular linear streaks extend from the primary
infection site toward draining regional nodes.
• Primary site may be an abscess, an infected wound or an area of
cellulitis
• Blistering of the affected skin may occur
• Lymph nodes associated with the infected lymphatic channels are
often swollen and tender
• Patients may be febrile and tachycardic
Investigations
• Complete bloodcell (CBC) count
• Blood culture
• Leading -edge culture or aspiration of pus
• Cultures and Gram staining of fluid.
Threshold sensitivity of Gram staining: 100,000 microorganisms per
milliliter, concentration rarely found in cellulitis or lymphangitis.
74.
A study foundthat multidetector computed tomography (MDCT)
imaging was very useful in determining the morphology
(cellulitis with a few small subcutaneous nodules and channels)
and the extension of the lesion in a case of nodular lymphangitis
caused by Mycobacterium marinum
75.
Management
• Antibiotics
• Oral
•Parenteral (with signs of systemic illness (eg, fever,
chills and myalgia, lymphangitis).
• Analgesics
• Anti -inflammatory
• Elevation and immobilization of affected areas reduces
swelling, pain, and the spread of infection. An abscess
may require surgical drainage.
76.
Nodular lymphangitis
• Treatmentof nodular lymphangitis is determined by
identifying the underlying cause.
• Sporotrichosis is most often identified in this disease
and is commonly found among gardeners.
They are progressiveneoplastic condition of
lymphoreticular
system arising from stem cells.
• Lymphomas are the 3rd most common
malignancy among children comprising 15% of
paediatric cancers.
80.
Aetiology
• Genetic predisposition.
•Sjogren’s syndrome – 30 fold increase of NHL.
• HIV infection.
• Wiskott – Aldrich syndrome.
• Ataxia – Telangiectasia.
• Bloom’s syndrome.
• Virus etiology – Epstein Barr virus.
• Celiac sprue – intestinal T cell lymphoma.
• H pylori may be associated with MALT lymphoma.
• Occupation causes – hair dye workers; herbicide
exposure.
• Ionizing radiation.
• Smoking; alcohol consumption; tobacco usage.
• Lymphomas are more common in western countries than in asia
WHO modified REALclassification (Revised
European
American Lymphoma) of lymphoma:
1. B-cell neoplasms
I. Precursor B cell neoplasm—ALL, LBL.
II. Peripheral B cell neoplasm—It includes all B
cell
related non-Hodgkin’s lymphomas
2. T-cell and putative NK cell neoplasms
I. Precursor T cell neoplasms—ALL and LBL
T cell related.
II. Peripheral T cell and NK cell neoplasm—It
includes all T cell related non-Hodgkin’s
lymphomas.
3. Hodgkin’s lymphoma
I. Predominant HL—Nodular lymphocyte type
II. Classical HL
Nodular sclerosis
Lymphocyte rich
Mixed cellularity
Lymphocyte depletion
Note: ALL is acute lymphoblastic leukaemia.
LBL is
lymphoblastic lymphoma.
83.
Clinical Features
• Itis more common in males.
• It has got bimodal presentation. It is seen in
young and adolescents (20-30 years) as well as
in elderly(> 50 years).
• Painless progressive enlargement of lymph
nodes.They are smooth, firm, nontender,
typically Indiarubber consistency.
84.
Site
• Cervical lymphnodes commonest—82%
(lower deepcervical group and in posterior
triangle).
• Others include axillary, mediastinal,
inguinal,abdominal.
85.
Specific Features
• Nodularsclerosis is most commonest type.
• Consecutive group of lymph nodes are
involved.
• Splenomegaly is very common (45%).
• Hepatomegaly with jaundice—jaundice is due
tohaemolysis or due to diffuse liver
involvement
86.
• Constitutional symptomslike fever, pruritus, weight loss
may be present which signifies stage “B”, which has got
poor prognosis. Stage “A” is absence of these symptoms
which signifies better prognosis.
Stage ‘B’ symptoms:
• Weight loss, more than 10% in 6 months.
• Fever, earlier called as Pel Ebstein fever is actually
is due to brucellosis.
• Pruritus
• Anaemia
• Bone pain
• Mediastinal lymph node involvement may cause
compression features like SVC obstruction.
• Occasionally bone like vertebrae may get involved.
• Anaemia, pancytopaenia.
87.
Ann-Arbor Clinical Staging:
Stage1: Confined to one group of
lymph node.
Stage 2: More than one group of
lymph nodes on
one side of the diaphragm.
Stage 3: Nodes involved on both
sides of the
diaphragm.
Stage 4: Extra nodal involvement
like liver, bone
marrow.
Suffix ‘S’—Spleen involved
Suffix ‘B’—Presence of
constitutional symptoms
Suffix ‘A’—Absence of
constitutional symptoms
Investigations
• Blood: Hb%,ESR, peripheral smear, blood
urea,
serum creatinine.
• FNAC of lymph nodes.
• Excision biopsy of lymph nodes. Full lymph
node isexcised to retain the architecture of
the lymph node.
• It is important to grade the tumour.
90.
• Chest X-ray—tolook for mediastinal lymph nodes,
pleural effusion.
• U/S abdomen—to look for the involvement of liver,
spleen, abdominal lymph nodes.
• CT scan of mediastinum and abdomen better method.
• Lower limb lymphangiography to look for the pelvic
and retroperitoneal lymph nodes.
• Bone marrow biopsy to stage and also to see
theresponse to treatment.
91.
• Staging laparotomy:The abdomen is opened.
Splenectomy is done mainly to remove the tumour
bulk, as spleen is commonly involved and also to
avoid irradiation to splenic area which often causes
unpleasant pulmonary fibrosis. Biopsies are taken
from both lobes of the liver (needle biopsy) from
paraaortic, celiac mesenteric, iliac nodes. In females
ovaries are fixed behind the uterus to prevent
radiation oophoritis (oopheropexy/ovarian translocation).
Staging laparotomy is not routinely done now. It
is done only if it benefits the patient to have better
plan of treatment or better result
92.
Treatment for HL
•Treatment strategy for HL
• Early favourable stage – extended field
radiation only
• Early unfavourable stage – extended radiation
plus chemotherapy
• Advanced stage – extensive chemotherapy
often with local radiation
93.
Unfavourable signs inearly HL
• • Large mediastinal mass
• • Extranodal disease
• • Elevated ESR
• • Four or more involved regions
• • Presence of B symptoms
• • Anaemia; low serum albumin level
• • Age more than 50
• • Male gender
• Note: First five parameters are most important
94.
• • StageI and II:
• 1. Mainly radiotherapy—External high cobalt RT.
• • Above the diaphragm—“Y” field therapy,
• covering cervical, axillary, mediastinal lymph
• nodes.
• • Below the diaphragm, mantle or inverted “Y”
• field therapy, covering paraaortic and iliac
• nodes.
• 2. Chemotherapy is also given
95.
• • StageIII and IV: Mainly chemotherapy.
• Drugs used include—
• • Mustine. M. (Mechloroethamine).
• • Oncovine. O. (Vinca alkaloids).
• • Procarbazine. P.
• • Prednisolone. P.
• Other regimens available — MVPP, ABVD
96.
NON-HODGKIN’S LYMPHOMA (NHL)
•It occurs in middle aged and elderly. It is more
aggressive than HL.
• It involves asymmetrical group of lymph nodes.
• General condition is poor.
• Inner Waldeyer ring, epitrochlear lymph nodes,
peripheral lymph nodes are commonly involved.
• Spleen is not commonly involved.
• Hepatomegaly is common.
• Vertebral involvement is common; paraplegia can
occur.
• Secondary infection, cachexia and immunosuppression
is more common.
• Treatment
• Mainlychemotherapy
• Various regimens available include:
• • ChOPP—Chlorambucil, Oncovin, Procarbazine,
• Prednisolone.
• • ABVD—Adriamycin, Bleomycin, Vincristine,
• Dacarbazine.
• • ABVP—Adriamycin, Bleomycin, Vincristine,
• Prednisolone.
• • Combinations of above.
• Role of radiotherapy in NHL: When vertebra is involved.
• Prognosis is poor compared to HL.
99.
BURKITT’S LYMPHOMA
(Malignant Lymphomaof Africa)
• • It is common in South Africa and New Guinea.
• • Epstien Barr virus may be the etiological agent. It is
• common in children.
• • It is associated with infectious mononucleosis.
• • It is common in malaria endemic area.
• • The tumour is multifocal, rapidly growing, painless.
• • Different groups of lymph nodes can also be affected
100.
Microscopy
• Primitive lymphoidcells with large clear histiocytes—
• starry night (starry sky) pattern.
Sites
• • It is common in jaw—either lower or upper.
• • Abdominal presentation and renal involvement is
• common (75%).
• • Renal involvement often may be bilateral.
• • In females, ovaries are commonly affected.
101.
• Types
• 1.Endemic (African)—Commonly occurs in
jaw
• 2. Nonendemic (sporadic)—Commonly occurs
in
• abdomen
• 3. Aggressive lymphoma—Occurring in HIV
patients.
102.
• Investigation
• •FNAC and biopsy confirms the diagnosis.
• • Jaw X-ray shows osteolytic lesions.
• • U/S abdomen is done to look for
involvement of
• kidneys.
• • Blood urea and serum creatinine estimation
is done.
103.
Treatment
• • Radiotherapy.
•• Chemotherapy: Cyclophosphamide,
Methotrexate,
• Orthomelphalan.
• • Surgery is usually not indicated unless it is
localised
• or in case of involvement of ovaries.
• Prognosis is good.
104.
CUTANEOUS T CELLLYMPHOMA
• Cutaneous T cell lymphoma comprises mycosis
fungoides, Sezzary syndrome, reticulum cell sarcoma
of skin and other cutaneous lymphocytic dysplasias.
Mycosis fungoides is the commonest among them.
• Cutaneous T cell lymphoma can be indolent
(commonly mycosis fungoides); aggressive (Sezzary
syndrome); provisional (granulomatous/panninculitis
like T cell lymphoma).
.
105.
• Initial macularpatch/plaque phase slowly
changes into tumour phase with painful,
pruritic erythroderma often with visceral
spread. Alopecia mucinosa and follicular
mucinosis are common in mycosis fungoides.
• Lymph nodes may get involved.
• Tumorcells in peripheral smear are also
important in deciding therapy and prognosis
106.
• Multiple skinbiopsies/peripheral smear/node
biopsy/immunohistochemistry/pheo or genotyping
are important investigations
• Prognosis depends on extent of skin involvement
(more the 10% body surface area carries poor
prognosis)/nodal spread/blood spread.
• Treatment: Localised external beam radiotherapy;
topical chemotherapy (bexarotene gel/carmustine
ointment); phototherapy; total skin electron beam
therapy; extracorporeal photochemotherapy. Bexarotene
is a type of retinoid.
107.
Sezzary syndrome
• isa type of cutaneous T cell
• lymphoma with skin lesions with special Sezzary
• cells having cribriform nucleus. It is often
associated
• with leukaemias. It is treated like any other
cutaneous
• T cell lymphoma.