Hydroceles are a common presenting complaint to the urological surgeon. They are known to harbour malignancy in a small percentage of cases. We report a case of malignant mesothelioma of the tunica vaginalis and a case of isolated lymphoma of the spermatic cord, both presenting during routine hydrocele repair. These are both rare diagnoses with a handful of reported cases worldwide. The literature of both these pathological entities is reviewed.
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