The authors present a case of an eyelid eccrine porocarcinoma, a very rare malignant sweat gland tumor characterized histopathologically by nests of atypical poromatous cells and the presence of duct-like lumina. Histopathologic analysis of this case also exhibited numerous loose tumor cells in the adjacent tear film, a finding that has not been previously described.

This case report highlights a unique presentation of a dark without pressure lesion in a patient with a choroidal osteoma. The appearance of this patient's fundus suggests a relationship between the change in the photoreceptor structure of dark without pressure and adjacent space-occupying lesions such as tumors or other ocular pathologies.