Incidental detection of primary hepatocellular carcinoma on 18F-prostate-specific membrane antigen-1007 positron emission tomography/computed tomography imaging in a patient with prostate cancer: A case report

Abstract

Rationale:Prostate-specific membrane antigen positron emission tomography-computed tomography (18F-PSMA-1007PET/CT) imaging is an emerging method for the diagnosis of prostate cancer (PC), but its efficiency in detecting other accompanying diseases has rarely been investigated.Patient concerns:A 77-year-old man presented with a complaint of bone pain throughout his entire body lasting for 2 weeks. Routine preoperative whole-body bone scanning revealed multiple osteogenic metastases. His alpha-fetoprotein and prostate-specific antigen levels were 108.2ng/mL and 53.32ng/mL, respectively. 18F-PSMA-1007PET/CT imaging revealed high tracer uptake in the primary lesion in the liver and the peripheral zone of the prostate.Diagnoses:Due to the results from imaging and pathological examinations, a diagnosis of PC with multiple bone metastases accompanied by primary hepatocellular carcinoma was made.Interventions:Taking into consideration the patient's age, interventional therapy was performed for the liver lesion, whereas the prostate and bone lesions were treated with endocrine therapy.Outcomes:The patient recovered well and was discharged uneventfully postoperatively. The patient was also doing well at the 6-month follow-up.Lessons:PSMA-PET/CT imaging results must be interpreted cautiously when the uptake of PSMA increases in a single lesion instead of the most common sites of PC metastasis. Pathological examination of the suspected lesions is also recommended.