Acquired Amegakaryocytic Thrombocytopenia Associated With Autoimmune Hemolytic Anemia. 2022

Naoto Ikeda, and Yuki Hisano, and Takayuki Kamao, and Masatoshi Uno, and Takaaki Mizushima
Internal Medicine, Kaneda Hospital, Okayama, JPN.

Acquired amegakaryocytic thrombocytopenia (AATP) is a thrombocytopenic disorder characterized by a decrease in megakaryocytes in the bone marrow. AATP is effectively treated with immunosuppressive therapy. We report a case of a 68-years-old male referred to us due to purpuric lesions on the extremities and was noted to be thrombocytopenic. Bone marrow biopsy showed AATP with autoimmune hemolytic anemia (AIHA). Only two cases of AATP associated with AIHA have been reported. AATP should be differentiated carefully from other causes of peripheral destruction of platelets, such as immune thrombocytopenia (ITP).

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