Hemophagocytic syndrome in a patient with long-term stable pulmonary sarcoidosis with progressive spleen and bone marrow lesion.

An 83-year-old woman with asymptomatic pulmonary sarcoidosis presented to our hospital with fever and malaise for three months. Abdominal CT showed splenomegaly, and bone marrow examination revealed non-caseating granulomas. Pancytopenia was diagnosed due to bone marrow and splenic lesions of sarcoidosis.