| Sumario: | The Sweet syndrome, or acute febrile neutrophilic dermatosis, is rare and has characteristic clinical, physical, and pathologic findings: abrupt onset of pyrexia, elevated neutrophil count, tender erythematous skin lesions, and a diffuse infiltrate of mature neutrophils in the reticular dermis with edema in the papillary dermis. The Sweet syndrome can be further classified based on the clinical setting: classical, malignancy-associated, and drug-induced. Diagnosis can alert the clinician to the presence of an underlying malignancy or the recurrence of a malignancy. The most commonly associated malignancy is acute myelogenous leukemia. We present three cases of Sweet syndrome associated with hematopoietic neoplasms.
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