Granulocytic sarcoma manifested as ascites.

Granulocytic sarcoma rarely presents an effusion. We have described an unusual case of granulocytic sarcoma with ascites. Malignant cells may be confused with adenocarcinoma. Eosinophilic myelocytes, peroxidase-positive malignant cells, and the Philadelphia chromosome in the ascitic fluid cells established the definitive diagnosis of granulocytic sarcoma.