A yellow tumor in the eye with optic disc edema is suggestive of which diagnosis?

The presence of a yellow tumor in the eye accompanied by optic disc edema is suggestive of retinal capillary hemangioblastoma. This condition is often associated with von Hippel-Lindau disease, which involves the development of various tumors including hemangioblastomas. These tumors can appear as yellowish or orange lesions within the retina and are known to cause complications such as retinal detachment and edema of the optic disc due to increased vascularity and pressure effects on the surrounding structures.

The optic disc edema indicates that there may be increased intracranial pressure or an effect on the optic nerve, which is also consistent with the presence of a vascular tumor like a retinal capillary hemangioblastoma. This tumor's growth can lead to secondary complications affecting the optic nerve and visual pathways, further explaining the observation of both the tumor and optic disc changes.

In summary, the combination of the yellow tumor appearance and the optic disc edema aligns with the clinical presentation typically associated with retinal capillary hemangioblastoma, making it the most appropriate diagnosis in this context.