Fenniche Samy, Zidi Yossra, Tekaya Naoufel Ben, Ammar Feiza Ben, Yaacoub Karim, Mokni Mourad, Mokhtar Insaf, Osman Amel Ben, Zitouna Mohamed Moncef, Haouet Slim
Dermatology Department, Habib Thameur Hospital, Tunis, Tunisia.
Am J Dermatopathol. 2006 Feb;28(1):40-4. doi: 10.1097/01.dad.0000175530.42615.94.
Lymphoepithelioma-like carcinoma of the skin (LELCs) is a rare cutaneous neoplasm with histologic features resembling lymphoepitheliomatous tumors of the nasopharynx. The association of lymphoepitheliomas with Epstein-Barr Virus (EBV) at some extracutaneous sites is well documented. In contrast, the presence of EBV in LELCs has never been shown in either Caucasians or Asian patients. We present the first case of LELCs in a Tunisian patient, a 78-year-old woman who presented with a nodule of the right cheek of 2 months' duration. The patient underwent surgical excision and there was no evidence of local recurrence 6 months later. Histologically, the entire dermis was occupied by lobules composed of atypical epithelial cells surrounded by a dense lymphoplasmacytic infiltrate. Immunohistochemical examination showed that the epithelial tumor cells were positive for cytokeratin and epithelial membrane antigen. In situ hybridization investigations for the presence of EBV-encoded RNA showed negative results. Our findings suggest that LELCs is not related to EBV among North African patients.
皮肤淋巴上皮瘤样癌(LELCs)是一种罕见的皮肤肿瘤,其组织学特征类似于鼻咽癌的淋巴上皮瘤样肿瘤。在一些皮肤外部位,淋巴上皮瘤与爱泼斯坦-巴尔病毒(EBV)的关联已有充分记录。相比之下,无论是高加索人还是亚洲患者,LELCs中EBV的存在从未得到证实。我们报告了首例突尼斯患者的LELCs病例,该患者为一名78岁女性,右脸颊出现一个持续2个月的结节。患者接受了手术切除,6个月后无局部复发迹象。组织学上,整个真皮被小叶占据,小叶由非典型上皮细胞组成,周围有密集的淋巴浆细胞浸润。免疫组化检查显示上皮肿瘤细胞细胞角蛋白和上皮膜抗原呈阳性。针对EBV编码RNA存在情况的原位杂交研究结果为阴性。我们的研究结果表明,在北非患者中,LELCs与EBV无关。