Work

Myeloid-lineage blasts with histiocytoid differentiation in TP53 mutated acute myeloid leukemia: a deceptive morphologic overlap with mature malignant histiocytic neoplasms

Year: 2026

Type: article

Abstract: Here, we report a case of TP53-mutated acute myeloid leukemia (AML) with monocytic differentiation that showed striking histiocytoid morphologic transformation following induction chemotherapy. Post-treatment blasts demonstrated significant morphologic overlap with mature malignant histiocytic neoplasms, particularly histiocytic sarcoma subtype, creating a potential diagnostic pitfall. Retained myeloperoxidase expression, together with the absence of cyclin D1 expression, supported a diagnosis of persistent AML rather than divergent histiocytic differentiation.

Source: Blood Research

DOI: 10.1007/s44313-026-00156-z

Authors: Neha Seth, Aishwarya Ravindran

Institutions: Northwell Health, Mayo Clinic

Language: English

Topic: Acute Myeloid Leukemia Research

Subfield: Hematology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $2,290