Sinus histiocytosis with massive lymphadenopathy (SHML) is a benign proliferating histiocytic disorder, predominantly of lymphnodes with extranodal involvement also seen. We present a case of 35 years old female with history of multiple swellings in neck since 1 month duration. On examination patient had painless bilateral cervical lymphadenopathy. No other ENT manifestations noted. Lymphnode biopsy revealed SHML. Abdominal scan and chest X-ray was done which was normal. This case report highlights the clinical, histological aspects of SHML, Rosai-Dorfman disease.

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