Clonal neutrophil infiltrates in concurrent Sweet’s syndrome and acute myeloid leukemia: A case report and literature review.

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Clonal neutrophil infiltrates in concurrent Sweet’s syndrome and acute myeloid leukemia: A case report and literature review.

Cancer Genet. 2018 Oct;226-227:11-16

Authors: Mo W, Wang X, Wang Y, Li Y, Zhang R

Abstract
Sweet’s syndrome (SS), also known as acute febrile neutrophilic dermatosis is often associated with a hematological malignancy, especially acute myeloid leukemia (AML) and myeloid dysplasia syndrome. Histopathologically, SS is characterized by diffuse infiltrates in the upper dermis, predominantly consisting of mature neutrophils. The origin of neutrophils invading the skin remains unknown. Herein, we report a patient with concurrent acute monoblastic leukemia and SS who initially presented with discrete erythematous papules and nodules on the neck. Single nucleotide polymorphism (SNP) array and next generation sequencing (NGS) revealed a concordant fms-related tyrosine kinase-3 (FLT-3) gene mutation in the bone marrow and skin lesion, indicating that the neutrophilic infiltrates were clonally related to the underlying myeloid neoplasm. This is the first case report of concurrent SS and AML, in which SNP array and NGS analysis were applied to confirm the clonality of the neutrophilic infiltrates.

PMID: 30005849 [PubMed – in process]

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