The most common tumor occurring in the adult eye is a secondary metastatic tumor. This generally presents as a choroidal mass, disseminated from a carcinoma elsewhere in the body.
The most common intraocular site for metastatic tumors is the posterior choroid, owing to its rich blood supply.
Lymphoma can affect a single ocular tissue or multiple tissues, from the ocular adnexa to various parts of the eye, and there may be systemic involvement.
Ocular involvement in leukemia is frequent and most commonly manifests clinically as retinal hemorrhages and cotton-wool spots.
Excerpted from BCSC 2020-2021 series: Section 4 - Ophthalmic Pathology and Intraocular Tumors. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.