sinus histiocytosis in a child: a rare case report

Background: rosai-dorfman disease is a self-limiting condition caused by histiocyte proliferation within the sinusoids of lymph nodes and in the extranodal tissue. it is a rare disease, particularly in children, that progresses with extensive lymphadenopathy. case presentation: we report the case of a 5-year-old child who presented with an enlarged cervical lymph node. fine needle aspiration cytology (fnac) was done, which was suggestive of ‘active lymphoid hyperplasia with sinus histiocytosis’. conclusion: in this case, after careful analysis of the biopsied specimen, a conservative approach was adopted. the patient was discharged and advised for follow-up. on follow-up, after 2 weeks the size of the lymph node had decreased.