[Merkel cell carcinoma of the upper eyelid].

Case report of a rare eyelid tumor in an 83-year-old woman. The excised lesion was classified as a neuroendocrine Merkel cell carcinoma on the basis of histologic, ultrastructural, and immunohistochemical examination. Detection of neurosecretory granules by electron microscopy and the characteristic cytokeratin and neurofilament pattern supported the diagnosis. The patient developed a local recurrence, which was successfully removed. There is no evidence of regional or distant metastases.