title: Incidental detection of Leydig cell tumor via fluorine-18-Choline PET/CT in a patient with recurrent prostate cancer disease.
abstract: We report a case of a 62-year-old man with biochemical recurrence of prostate cancer disease, investigated by fluorine-18-Choline ((18)F-FCH) PET/CT. (18)F-FCH PET/CT demonstrated focal increased uptake of (18)F-FCH inside the right testis, suggestive for distant recurrent disease. On testis removal, a Leydig cell tumor of 2.5 cm in diameter was unexpectedly found. (18)F-FCH PET/CT may demonstrate tumors other than prostate cancer.
authors.affiliation: Nuclear Medicine Unit, National Cancer Institute (IRCCS)-CRO Aviano, Milan, Italy.
authors.forename: Marino
authors.initials: M
authors.lastname: Cimitan
authors.forename: Marina
authors.initials: M
authors.lastname: Hodolič
authors.forename: Anna Margherita
authors.initials: AM
authors.lastname: Maffione
authors.forename: Eugenio
authors.initials: E
authors.lastname: Borsatti
authors.forename: Carmelo
authors.initials: C
authors.lastname: Urso
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Colletti
authors.forename: Domenico
authors.initials: D
authors.lastname: Rubello
mesh_terms: D002794:Choline; D005462:Fluorine Radioisotopes; D006801:Humans; D033162:Incidental Findings; D007984:Leydig Cell Tumor / Q000000981:diagnostic imaging*; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed
chemical_list: D005462:Fluorine Radioisotopes; D002794:Choline