获得性丛状血管瘤二例

例1女,18岁.右大腿红斑10年,缓慢扩大,无自觉症状.皮肤科检查:右大腿伸侧大片红褐色斑,有轻度浸润感,触之稍硬,边界不清.例2女,43岁,左侧肘窝红斑、丘疹及结节3年余,自觉瘙痒.皮肤科检查:左肘窝可见大片黄红色斑疹,表面可见多个大小不一的红色丘疹结节,部分融合成条索状,边界清楚,表面光滑,触之痛.2例皮损组织病理检均显示:表皮正常,真皮浅中层散在分布多个由毛细血管组成的小叶样结构,境界清楚,低倍镜下呈炮弹样分布,血管腔内衬扁平的内皮细胞,外围由周细胞环绕,部分小叶周围可见新月形或半月形扩张的淋巴管.

Acquired tufted angioma:two case report

Acquired tufted angioma is a very rare benign capillary hemangioma.Two cases of acquired tufted angioma are reported here.One patient,an 18-year-old female,presented with slowly expanding asymptomatic erythema on the extensor surface of right thigh for 10 years.Skin examination demonstrated large,mildly infiltrated,slightly indurated,ill-defined brunneus patches on the extensor surface of right thigh.Another case was a 43-year-old female who presented with pruritic erythema.papules and nodules on the left cubital fossa for 3 years.Dermatological examination revealed numerous yellowish red macular lesions on the left cubital fossa covered with multiple irregular and erythematous papules and nodules,some of which confluenced into streaks with sharp margin,smooth surface and tenderness.Histopathology of lesions from both patients showed a normal epidermis and some scattered,well-deftned,lobule-1ike structures in shallow and middle dermis,and these lobule-like structures were primarily composed of capillaries,and showed a cannonball-like distribution under a low-power microscope.Also,vascular spaces were lined with a singh layer of flat endothelial cells and surrounded by pericytes.Crescent or half-moon like dilated lymphatic vessels were observed around some of the lobuli.