LAUSR

BACKGROUND Granulocytic sarcoma in the lung is a rare presentation of acute myeloid leukemia (AML). Here, we describe a rare case of granulocytic sarcoma of the lung in a 56-year-old male patient with AML. METHODS Hematologic investigation, bone marrow aspirate, cytogenetic analysis, chest computed tomography (CT), and pulmonary biopsy were performed. RESULTS The patient achieved complete remission (CR) after induction therapy, but the patient refused further treatment and was lost to follow-up. CONCLUSIONS Pulmonary biopsy and bone marrow aspirate are important to confirm a correct diagnosis. Pulmo-nary granulocytic sarcoma as a prognostic factor needs further studies.