Myeloid Sarcoma: A Mediastinal Masquerader

Abstract

Mediastinal Myeloid Sarcoma is a rare entity. Here we present a case of a 28-year-old gentleman, who first presented with a mediastinal mass and was clinically considered lymphoblastic lymphoma. He was diagnosed initially as having T lymphoblastic lymphoma on a mediastinal trucut biopsy. After one month patient was diagnosed with Acute myeloid leukemia on peripheral smear and bone marrow examination and was confirmed with the help of flow cytometry. The biopsy slides from the mediastinal mass were reviewed and based on the smear findings additional immunohistochemical markers were added and diagnosed as Myeloid Sarcoma. Keywords: Myeloid sarcoma, Mediastinum, Acute myeloid leukemia