Right atrial B-cell lymphoma in a patient with ocular melanoma.

Primary cardiac lymphoma (PCL) is defined as a non-Hodgkin lymphoma involving only the heart or pericardium. PCL is extremely rare and often misdiagnosed. We report the case of a healthy 53-year-old male who originally presented with blurred vision secondary to a right intraocular mass. Enucleation of the eye confirmed a ciliary body melanoma and, upon further investigation, the patient was discovered to have a mass in the right atrium suspicious for a myxoma. However, resection of the atrial mass revealed a low-grade B-cell PCL. The occurrence of PCL in an immunocompetent patient being investigated for a visceral malignancy makes this a highly unusual presentation of a rare neoplasm.