Pure Mucinous (Colloid) Adenocarcinoma of the Conjunctiva

Mucinous carcinomas of the periorbital area are very rare malignant tumors and can be primary or secondary to metastasis. Primary mucinous carcinomas of the eyelid include, most commonly, primary cutaneous mucinous carcinoma with endocrine mucin-producing sweat gland carcinoma being a remote second.[1,2,3,4] To our knowledge, primary mucinous carcinomas of conjunctiva or lacrimal gland elements have not been described in the literature.[5,6] Metastatic carcinoma from visceral sites should also be considered in the differential diagnosis.