title: Primary carcinoid of the testis associated with carcinoid syndrome.
abstract: Testicular carcinoid is a rare disease accounting for less than 1% of all testicular neoplasms. It rarely manifests symptoms of carcinoid syndrome. Recent reports have noted that only 1.1-3.1% of testicular carcinoid tumors are complicated by carcinoid syndrome. In general, large tumor size and the presence of carcinoid syndrome are features associated with a malignant course. In the present case, pathological findings revealed pure carcinoid of the testis without metastasis. Moreover, watery diarrhea due to carcinoid syndrome disappeared and the serum serotonin level normalized following orchiectomy. The patient was followed up for 12 months with whole body computed tomography scan and assessment of serotonin levels. To date, there is no evidence of tumor recurrence. These findings suggest that monitoring serum serotonin levels may be useful as a marker during follow up of this type of tumor.
authors.affiliation: Department of Urology, Kurume University School of Medicine, Kurume, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hayashi
authors.forename: S
authors.initials: S
authors.lastname: Iida
authors.forename: J
authors.initials: J
authors.lastname: Taguchi
authors.forename: J
authors.initials: J
authors.lastname: Miyajima
authors.forename: M
authors.initials: M
authors.lastname: Matsuo
authors.forename: K
authors.initials: K
authors.lastname: Tomiyasu
authors.forename: K
authors.initials: K
authors.lastname: Matsuoka
authors.forename: S
authors.initials: S
authors.lastname: Noda
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000097:blood; D002276:Carcinoid Tumor / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008303:Malignant Carcinoid Syndrome / Q000473:pathology*; D013736:Testicular Neoplasms / Q000473:pathology* / Q000601:surgery
chemical_list: D014408:Biomarkers, Tumor