Abstract
AbstractCannibalism is a type of “cell-in-cell” phenomenon commonly described in myeloid lineage malignancies. Although lymphocytes and their precursors are inherently non-phagocytic, there are sporadic case reports describing cannibalism by leukemic lymphoblasts. In the current manuscript, we report the case of a pediatric B-lineage acute lymphoblastic leukemia (B-ALL) patient showing cannibalistic lymphoblasts and have reviewed the clinical and laboratory characteristics of similar cases documented in literature. Our manuscript highlights that all reported B-ALL patients showing cannibalistic lymphoblasts had intra-cytoplasmic vacuolations, and all such treatment-naïve pediatric patients were ETV6-RUNX1 fusion positive and had aberrant expression of myeloid lineage antigens.
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