This reports an extremely rare case of spontaneous regression of cutaneous myeloid sarcoma.

PMID: 

Ann Dermatol Venereol. 2020 Nov ;147(11):755-759. Epub 2020 Aug 24. PMID: 32854968

Abstract Title: 

[Spontaneous remission of cutaneous myeloid sarcoma].

Abstract: 

INTRODUCTION: Cutaneous myeloid sarcoma is a rare extramedullary tumour of immature myeloid cells. It is most often associated with acute myeloid leukaemia, and more rarely with myelodysplastic/myeloproliferative disease.PATIENTS AND METHODS: Herein we report a case of cutaneous myeloid sarcoma associated with myelodysplastic/myeloproliferative disease in an 84-year-old man with a diffuse purple papular and nodular rash. The disease course was marked by a spontaneous and total regression for two months. Given the patient's age and general condition, chemotherapy could not be given.DISCUSSION: Cutaneous myeloid sarcoma is rare. It is often associated with acute myeloid leukaemia, and more rarely with myelodysplastic/myeloproliferative disease, but it can occur in isolation. Diagnosis is particularly difficult and is based a consistent body of clinical and histological evidence. Spontaneous regression is very rare and involves immunological mechanisms that are still incompletely understood. Recurrence occurs within a variable time frame and is often associated with transformation to acute myeloid leukaemia if this was not already present at the time of diagnosis.CONCLUSION: Herein we report an extremely rare case of spontaneous regression of cutaneous myeloid sarcoma associated with myelodysplastic/myeloproliferative disease.

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