Merkel cell carcinoma mimicking acute leukemia.
Jonathan KeowKeith F KwanBen D HedleyCyrus C HsiaAnargyros XenocostasBenjamin Chin-YeePublished in: International journal of laboratory hematology (2024)
Bone marrow aspirate showed diffuse infiltration by a population of monomorphic cells with scant cytoplasm, markedly increased nuclear-to-cytoplasmic ratio, and numerous indistinct nucleoli. Bone marrow biopsy confirmed extensive marrow infiltration by a malignant neoplasm with strong and diffuse expression of synaptophysin by immunohistochemistry, consistent with metastases from Merkel Cell carcinoma.