Recurrent Primary Cutaneous Mucinous Carcinoma of the Lower Eyelid: A Case Initially Misdiagnosed as Metastatic Carcinoma

Wen Xu,1 Qi Gao,1 Yuxin Wang2 1Department of Dermatology, Zhejiang Provincial People’s Hospital, Hangzhou, Zhejiang, People’s Republic of China; 2Department of Dermatology, Peking University People’s Hospital, Beijing, People’s Republic of ChinaCorrespondence: Yuxin Wang, Department of Dermatology, Peking University People’s Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, People’s Republic of China, Tel +86 010-88325472, Email wyx_0716@163.comAbstract: Primary cutaneous mucinous carcinoma (PCMC) is a rare, low-grade adnexal tumor with a propensity for local recurrence despite a low metastatic potential. It typically presents as an asymptomatic, solitary red-to-gray-blue nodule on the head and neck. We report a case of recurrent PCMC on the lower eyelid that was initially misdiagnosed as metastatic carcinoma. The lesion was successfully and definitively managed with Mohs micrographic surgery (MMS) following multiple recurrences after standard excision.Keywords: mucinous carcinoma, primary, mohs surgery, immunochemistry