A Metastatic Neuroendocrine Eyelid Carcinoma Originating From the Ampulla of Vater.

Tumor metastasis to the eyelids is very rare. The authors report the first case of a neuroendocrine tumor that originated from the ampulla of Vater in the gastrointestinal tract and metastasized to the eyelid. The patient with a hospice care was referred to the authors' eye clinic after presenting with a palpable mass on the left eyelid and blinking discomfort. He was previously diagnosed with a neuroendocrine tumor arising from the ampulla of Vater. The eyelid tumor was simply removed to relieve discomfort, and histological and immunophenotypic evaluation of the resected eyelid mass showed a poorly differentiated neuroendocrine tumor with large cell types, similar to specimens from the duodenum.