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SU27.7-8 | Lymphatic System Disorders and Examination — SDL Guide (Part 2)
Principles of Management
Management follows the diagnosis, and for lymphoedema the foundation is conservative, lifelong care because the lymphatic damage is usually irreversible. The core measures are meticulous skin and nail hygiene to prevent the infections (cellulitis/lymphangitis) that worsen the swelling, graduated compression (bandaging then garments), manual lymphatic drainage and decongestive physiotherapy, exercise and limb elevation, and prompt treatment of any infective episode with antibiotics. For filarial lymphoedema, the antifilarial drug diethylcarbamazine (DEC) treats the active infection (mass drug administration with DEC and albendazole underpins national elimination programmes), although established elephantiasis still needs the conservative limb care above; surgery (debulking or lymphatic reconstruction procedures) is reserved for selected severe cases. Lymphangitis is treated as an acute infection: rest, elevation and prompt antibiotics covering streptococci, with drainage of any underlying abscess and treatment of the entry wound — early treatment prevents sepsis and limits lymphatic damage. Lymphoma is a medical/oncological disease: once the diagnosis and stage are established by biopsy and imaging, treatment is chemotherapy and/or radiotherapy under a haemato-oncologist (Hodgkin lymphoma in particular is highly curable), so the surgeon's role is chiefly diagnostic — obtaining the node biopsy — and prompt onward referral. Across all three, patient education matters: lifelong skin care and infection vigilance for lymphoedema, and early presentation of new or persistent lymphadenopathy.
- Lymphoedema: lifelong conservative care — skin/nail hygiene, compression, manual lymphatic drainage, exercise, treat infections promptly; DEC for active filariasis; surgery for selected severe disease.
- Lymphangitis: rest, elevation, antibiotics (streptococcal cover), treat the entry wound/abscess; early treatment prevents sepsis.
- Lymphoma: biopsy + staging → chemotherapy/radiotherapy under oncology (Hodgkin highly curable); surgeon's role is diagnosis and referral.
CLINICAL PEARL
Two discriminations save you from error in the swollen limb and the enlarged node. First, decide whether limb oedema is PITTING (think cardiac, renal, hepatic, hypoalbuminaemic or venous causes) or established NON-PITTING with a positive Stemmer's sign (think lymphoedema) — and in India always ask about filariasis exposure for chronic leg lymphoedema. Second, for a persistently enlarged lymph node, remember that a hard, fixed, or supraclavicular node, or any painless node with B-symptoms, must not be observed indefinitely — it needs tissue, and lymphoma in particular requires an EXCISION biopsy of a whole node (FNAC alone cannot show the architecture). Never let weeks pass watching a suspicious node when a biopsy would give the diagnosis.
Check Your Understanding
Bring the threads together by reasoning back through the three patients in the hook. The man from the coastal village with a chronic, ascending, non-pitting leg, warty skin and a positive Stemmer's sign has secondary lymphoedema from filariasis: confirm with a night blood smear for Wuchereria bancrofti microfilariae, treat active infection with diethylcarbamazine, and commit him to lifelong skin care, compression and infection prevention. The woman with a heavy swollen arm after mastectomy and axillary clearance has secondary lymphoedema from lymph node clearance: she needs decongestive physiotherapy, compression and meticulous skin care to prevent cellulitis. The young man with a painless rubbery neck node, night sweats and weight loss has a possible lymphoma: he needs systematic node examination, an excision biopsy of a whole node, staging imaging, and prompt referral to haemato-oncology. Use these to self-test the competencies this module covers. First, can you describe the pathophysiology, features and management of lymphoedema (primary vs secondary, filariasis), lymphangitis and lymphoma? Second, can you perform a systematic examination of all the regional lymph node groups and of a swollen limb, describing a node by its key characteristics and eliciting Stemmer's sign? Third, can you choose the right investigations — night smear for filariasis, excision biopsy for lymphoma — and state the principles of management for each? The questions below check exactly these links.
SELF-CHECK
A young man has a painless, rubbery, enlarging cervical lymph node with night sweats and weight loss. What is the most appropriate investigation to establish the diagnosis, and why?
A. Reassurance and review in 6 months, as most nodes are benign
B. Fine-needle aspiration cytology alone, which is sufficient to subtype lymphoma
C. Excision biopsy of a whole lymph node, because lymphoma diagnosis and subtyping require nodal architecture
D. Start broad-spectrum antibiotics and reassess
Reveal Answer
Answer: C. Excision biopsy of a whole lymph node, because lymphoma diagnosis and subtyping require nodal architecture
A painless, rubbery, progressively enlarging node with B-symptoms (fever, night sweats, weight loss) is suspicious for lymphoma. Diagnosis and subtyping require the whole node's architecture, so an EXCISION biopsy of an entire node is the investigation of choice — FNAC may suggest malignancy but cannot reliably subtype lymphoma. Watchful waiting or empirical antibiotics would dangerously delay a potentially curable diagnosis.