Primary mucinous carcinoma of eyelid: a rare clinical entity.

Primary cutaneous mucinous carcinoma of the eyelid, a rare pathologic entity, is an adenocarcinoma of the eccrine glands. Though it has low metastatic potential, it does have a significant recurrence rate. We present the occurrence, clinical and histological features, and management of this tumor in a 62-year-old male who presented with a recurrent, firm, nodular left lower lid lesion. He underwent excision with a 5 mm margin and the defect was repaired with a Mustarde's cheek rotation flap. A full oncological screening, including whole-body Positron Emission Tomography scan, excluded the presence of primary mucinous carcinoma elsewhere and any metastatic spread. This case underscores the importance of considering this tumor in recalcitrant eyelid lesions and highlights the pathology of this tumor.