额部隆突性皮肤纤维肉瘤一例

患者男,56岁,因左前额部肿块1年余入院.患者20年前左前额部因黄豆大小肿块,曾行切除术.1年前肿块复发并增大,无明显自觉症状来我院就诊.皮肤科检查:左前额部见3 cm×2 cm×1 cm大小的肿块,呈淡红色半球形隆起于皮面,表面皮肤光滑,紧张,质地较硬,与皮肤粘连,但与深筋膜无明显粘连,无触压痛.肿块周围可见明显凹陷区.皮损组织病理:真皮中下层及脂肪内可见大量梭形细胞增生,细胞轻度异形,呈编织状排列.免疫组化染色:CD34(+),波形蛋白(+),CK(-),S-100(-),上皮膜抗原(-).诊断为隆突性皮肤纤维肉瘤.切除肿瘤并行游离全厚皮片移植,术后皮片生长良好,效果满意.

Dermatofibrosarcoma protuberans of the forehead: a case report

A 56-year-old male was admitted to the hospital for a mass on the left forehead for more than one year. Twenty years prior to the presentation, the patient developed a broad bean-sized nodule on the left forehead, thereafter, an in situ resection was performed. One year prior to the presentation, the lesion recurred and gradually enlarged with no evident symptom. Physical examination showed a pink, painless and indurated mass measuring 3 cm × 2 cm × 1 cm on the left forehead. The lesion appeared as a hemispheroid-shaped elevation, had a smooth and tense surface, and was adherent to skin but not to deep fascia. There was an obvious depression around the mass. Histopathological examination revealed an evident proliferation of spindle cells with a braid-like distribution in the mid- and lower dermis. Mild atypia was observed in these cells.Immunohistochemistry revealed that the tumor cells were positive for CD34 and vimentin, but negative for CK, S-100 and epithelial membrane antigen. A diagnosis of dermatofibrosarcoma protuberans was made. The lesion was resected followed by a free full thickness skin graft. After operation, the flap survived well, and a satisfactory outcome was achieved.