Abstract

Acute panmyelosis with myelofibrosis (APMF) corresponds to <1% cases of acute myeloid leukemia, which could be an underestimation due to missed diagnosis. Due to its rapidly fatal course, it warrants a timely and correct diagnosis. We present a case of a 44-year male who came with a short history of fever, generalised weakness, revealed pancytopenia with occasional circulating blast in the peripheral blood smear. Bone marrow aspirate was dry tap,biopsy revealed panmyelosis with myelofibrosis with increased (22%) blasts. Flowcytometric immunophenotyping, cytogenetics and molecular tests were undertaken. Together with clinical details, immunophenotypic profile, cytogenetics and molecular studies, the diagnosis of Acute panmyelosis with myelofibrosis was made and managed accordingly. 32 The WHO 2017 describes APMF as an acute panmyeloid proliferation with increased blasts (≥20% in the bone marrow or peripheral blood) and accompanying marrow fibrosis. APMF is rare with poor prognosis thus, must be differentiated especially from Acute megakaryoblastic leukemia to arrive at the correct diagnosis which will help reduce/prevent the early mortality by providing timely chemotherapy followed by upfront hemopoietic stem cell transplantation.

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