Alberto Devés

Mycosis fungoides presenting with extensive pyoderma gangrenosum-like ulcers

Mycosis fungoides (MF) may present with atypical clinical manifestations. Usually it mimics various chronic dermatoses, with the appearance of ulcers during the tumour stage. Infrequently, cutaneous ulcers are the main or initial sign of lymphoma. We report the case of a man who presented multiple skin lesions that clinically appeared to be pyoderma gangrenosum (PG). However, histological and immunohistochemical examination revealed MF. This case illustrates that PG‐like ulcers may be atypical cutaneous manifestations of MF and exceptionally the presenting sign of this disease.

Cutaneous true histiocytic malignancy: True histiocytic lymphoma

True histiocytic malignancies (THM) are controversial disorders that are being re-evaluated with modern cellular and molecular biology techniques. True histiocytic lymphoma (THL) is a low-incidence, poor-prognosis THM. It mainly affects the skin, gastrointestinal tract, and bone tissues. Occasionally, skin lesions are the presenting clinical features. A patient with initially cutaneous THL is described. This and other reported cases confirm that THM are a nosologic entity by themselves.

Pitiríase rósea purpúrica: relato de caso e revisão da literatura

Purpuric pityriasis rosea is an unusual disease with ten published cases in the American and European literature. The main feature is an hemorrhagic or purpuric eruption with or without scaling. A case is reported of a 25-year-old man with skin lesions affecting the scapular region. The review emphasizes the differential diagnosis of purpuric cutaneous diseases. According to LILACS and MEDLINE, no similar case has been reported in the Latin-American literature.