title: Rectal Carcinoma on 68Ga-PSMA PET/CT.
abstract: We report on a case of biopsy-proven and MRI-staged rectal carcinoma with avid prostate-specific membrane antigen (prostate-specific membrane antigen) uptake on Ga PET/CT as part of the workup for synchronous prostate cancer. This case adds to the growing number of observational reports on the presence of significant nonprostatic prostate-specific membrane antigen activity in malignant tumors and highlights the need for careful interpretation of unsuspected sites.
authors.affiliation: From the Department of Nuclear Medicine and Specialised PET Services Queensland, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.
authors.forename: Yi-Tung Tom
authors.initials: YT
authors.lastname: Huang
authors.forename: William
authors.initials: W
authors.lastname: Fong
authors.forename: Paul
authors.initials: P
authors.lastname: Thomas
mesh_terms: D000369:Aged, 80 and over; D002277:Carcinoma / Q000000981:diagnostic imaging*; D004492:Edetic Acid / Q000031:analogs & derivatives*; D005709:Gallium Isotopes; D005710:Gallium Radioisotopes; D006801:Humans; D008297:Male; D064847:Multimodal Imaging; D009842:Oligopeptides; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D005709:Gallium Isotopes; D005710:Gallium Radioisotopes; D009842:Oligopeptides; D019275:Radiopharmaceuticals; C000718244:gallium 68 PSMA-11; D004492:Edetic Acid