Chondroid syringoma is a benign mixed tumor characterized by sweat gland elements in a cartilaginous stroma. This rare tumor accounts for only 0.01% of all primary skin tumors and occurs only rarely in the periorbital region. Chondroid syringomas are usually 0.5 to 3.0 cm in size, with increased risk of malignancy in tumors larger than 3.0 cm. Here we report a rare case of giant chondroid syringoma arising in the lower eyelid, characterized by an epithelial component in a cartilaginous stroma.
This article describes 2 unusual cases of osseous metaplasia occurring within the eyelid and presents a brief review of the literature on cutaneous calcification. A 62-year-old man sought treatment for an eyelid mass containing osseous metaplasia in an area of lymphoid hyperplasia. An extensive oncologic workup ruled out malignancy. A 46-year-old man with a history of recurrent chalazion sought treatment for a firm mass of the upper eyelid that demonstrated bone formation in an area of sebaceous glands. Both lesions were excised with no further recurrence. Osseous metaplasia of the eyelid is a rare entity with diverse etiologies ranging from congenital syndromes to trauma, neoplasm, and inflammation. In some cases, a precise etiology cannot be identified.