Sarcoidosis presenting with bicytopenia due to bone marrow granuloma

Abstract

A 55-year-old homemaker presented with low-grade fever, fatigue, and loss of weight for 2 months. She had hepatosplenomegaly, mediastinal lymphadenopathy, cytopenias, hypercalcemia with normal parathormone, and noncaseating granulomas in bone marrow and lymph node biopsy. The patient was diagnosed to have sarcoidosis with bone marrow involvement (histopathology showing noncaseating granuloma and high serum angiotensin-converting enzyme after ruling out other causes of granulomatous disorders by appropriate tests). She was managed with prednisolone 20 mg daily which was reduced and stopped after 3 months. On follow-up, she was asymptomatic and her blood counts were normal. Diagnosis of sarcoidosis should be considered always after ruling out other causes since it can mimic lymphoproliferative disorders and granulomatous infections. The initial presentation of sarcoidosis with bicytopenia due to bone marrow granulomas is extremely rare and physicians should have awareness of such atypical presentations.