title: Primary cytodiagnosis of peritoneal extramedullary hematopoiesis.
abstract: Cytologic examination of peritoneal fluid in a patient with known myelofibrosis and previous splenectomy revealed megakaryocytes along with erythroid and myeloid precursors. These findings were consistent with extramedullary hematopoietic (EMH) implants of the peritoneum. A few similar cases have been occasionally reported in the literature. This case represents an additional example of a primary diagnosis of peritoneal EMH in which therapy was based on the cytologic findings and sequential cytologic observations were made.
mesh_terms: D001201:Ascites / Q000209:etiology; D001202:Ascitic Fluid / Q000166:cytology*; D005260:Female; D006411:Hematopoiesis, Extramedullary; D006801:Humans; D008533:Megakaryocytes / Q000166:cytology; D008875:Middle Aged; D055728:Primary Myelofibrosis / Q000150:complications