蕈样肉芽肿(MF)是一种原发于皮肤的T细胞淋巴瘤,形成肿瘤的细胞通常为协助性或诱导性T细胞。作者报告1例MF在淋巴瘤的溃疡性皮损内发现有坏死性血管炎的改变。病例报告:男性46岁,白人,患斑块期MF。6年前开始发病,入院时皮肤上有多种损害。骶骨部可见直径7cm,深2cm的溃疡,有5mm硬的紫色 Mycosis granuloma (MF) is a primary T-cell lymphoma in the skin. The tumor-forming cells are usually assisted or induced T cells. The authors reported that one case of MF showed changes in necrotic vasculitis in the ulcerous lesions of lymphoma. Case report: Male 46 years old, Caucasian, with plaque stage MF. 6 years ago, the onset of the disease, there are a variety of damage to the skin on admission. Radial ulcers of 7cm in diameter and 2cm in depth are visible in the sacrum, with 5mm hard purple.