Zaballos Pedro, Rodero Jesus, Serrano Patricia, Cuellar Francisco, Guionnet Neus, Vives Jose Maria
Dermatology Department, Hospital de Sant Pau i Santa Tecla, Tarragona, Spain.
Dermatol Online J. 2009 Oct 15;15(10):10.
Pyogenic granuloma is a common, benign, acquired, vascular growth of skin and mucous membranes that usually presents as a solitary, rapidly, growing, papule or polyp that bleeds easily after minor trauma. The clinical diagnosis of this lesion is usually straightforward. Moreover, the dermoscopic features associated with pyogenic granulomas have been described recently. However, occasionally this tumor can be difficult to differentiate clinically and dermoscopically from other pigmented and vascular lesions. We report the case of an 18-year-old male who presented with a round, purple-black nodule with hemorrhagic crust, 1 cm in diameter, located on the lower part of the thorax. Dermoscopic evaluation revealed the presence of a blue-white veil, a black blotch, polymorphous atypical vessels, milky-red areas, and hemorrhagic crusts. The subsequent histopathological examination revealed a pyogenic granuloma. We present a case of pyogenic granuloma clinically and dermoscopically indistinguishable from a pigmented malignant melanoma.
化脓性肉芽肿是一种常见的、良性的、后天性的皮肤和黏膜血管增生，通常表现为单个、迅速生长的丘疹或息肉，轻微创伤后容易出血。这种病变的临床诊断通常很简单。此外，最近已经描述了与化脓性肉芽肿相关的皮肤镜特征。然而，偶尔这种肿瘤在临床和皮肤镜下很难与其他色素性和血管性病变相鉴别。我们报告一例18岁男性病例，其胸部下方出现一个直径1厘米的圆形紫黑色结节，有出血性结痂。皮肤镜检查显示有蓝白色面纱、黑色斑点、多形性非典型血管、乳红色区域和出血性结痂。随后的组织病理学检查显示为化脓性肉芽肿。我们展示了一例临床和皮肤镜下与色素性恶性黑色素瘤难以区分的化脓性肉芽肿病例。
