Soeda F, Watabe T, Kato H, Uemura M, Nonomura N. Duodenal Adenocarcinoma Mimicking Metastasis of Prostate Cancer on 18F-Prostate-Specific Membrane Antigen-1007 PET/CT.
Clin Nucl Med 2021;
46:49-51. [PMID:
33208620 PMCID:
PMC7722462 DOI:
10.1097/rlu.0000000000003400]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/20/2020] [Indexed: 11/25/2022]
Abstract
A 76-year-old man with dyspnea (initial prostate-specific antigen [PSA]: 216 ng/mL) underwent F-FDG PET/CT, with uptake in the prostate, lymph nodes, fifth thoracic vertebra (T5), and cricoid cartilage. A biopsy revealed prostate adenocarcinoma (Gleason score 4 + 5, cT4 N1 M1). On initiation of combined androgen blockade therapy, PSA value decreased. However, 4 years later, in a castration-resistant state (PSA 2.14 ng/mL), CT and bone scintigraphy revealed a duodenal tumor and T5 metastasis. F-prostate-specific membrane antigen-1007 PET/CT showed uptake in the already known T5 metastasis (SUVmax, 33.55) and even in the duodenal tumor (16.55). The latter was histologically diagnosed as duodenal adenocarcinoma.
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