Article ID Journal Published Year Pages File Type
5716100 Human Pathology 2017 7 Pages PDF
Abstract

•Juvenile myelomonocytic leukemia with prominent CD141+ myeloid dendritic cell (MDC) differentiation is described.•CD141+ MDCs are CD13-bright and partially CD1c+.•This is the first description of CD141+ MDCs involvement in a neoplasm.•Marked DC differentiation in a neoplasm suggests a myelodendritic or myelomonodendritic process.

SummaryMyeloid malignancies showing CD141+ myeloid dendritic cell (MDC) differentiation have not been documented. Here, we describe a patient with juvenile myelomonocytic leukemia in which a prominent CD141+ cell population was identified most consistent with CD141+ MDCs based on phenotypic similarity with normal CD141+ MDCs. Molecular studies demonstrated a KRAS mutation. The findings from the spleen and bone marrow are described. This is the first well-documented demonstration of CD141+ MDC differentiation of a hematopoietic neoplasm.

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