Multicentric Mucinous Adenocarcinoma of Bilateral Eyelids.

A 59-year-old female patient presented with a purple, fluid-filled lesion on her left upper eyelid that contained a solid component. Excisional biopsy revealed a diagnosis of mucinous adenocarcinoma. Extensive oncological workup was negative for a distant primary tumor or metastasis and confirmed a diagnosis of primary mucinous adenocarcinoma. Further excision and eyelid reconstruction were required. One year later, another suspicious, fluid-filled lesion was excised from the patients' left lower eyelid. Biopsy and subsequent oncological workup confirmed a mucinous adenocarcinoma in situ, a known precursor of primary mucinous adenocarcinoma. This case contributes to the limited literature reporting multicentric primary mucinous adenocarcinoma of the eyelids and suggests that there may be underlying factors that heighten a patient's risk for developing these tumors.