Primary carcinoid of the testis associated with carcinoid syndrome

Testicular carcinoid is a rare disease accounting for less than 1% of all t esticular neoplasms. It rarely manifests symptoms of carcinoid syndrome. Re cent reports have noted that only 1.1-3.1% of testicular carcinoid tumors a re complicated by carcinoid syndrome. In general, large tumor size and the presence of carcinoid syndrome are features associated with a malignant cou rse. In the present case, pathological findings revealed pure carcinoid of the testis without metastasis. Moreover, watery diarrhea due to carcinoid s yndrome disappeared and the serum serotonin level normalized following orch iectomy. The patient was followed up for 12 months with whole body computed tomography scan and assessment of serotonin levels. To date, there is no e vidence of tumor recurrence. These findings suggest that monitoring serum s erotonin levels may be useful as a marker during follow up of this type of tumor.