2021 Volume 63 Issue 2 Pages 200-206
A 60-year-old man was admitted to our hospital with an elevated serum level of prostate-specific antigen detected on medical checkup. Magnetic resonance imaging revealed no abnormality of the prostate; however, a mass was identified in the left pelvis. Despite various examinations, the nature of the mass could not be determined; therefore, he underwent transcolonic endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) using a forward-viewing echoendoscope. Histological examination of the aspirated specimen revealed adenocarcinoma, with histological characteristics resembling those of prostate cancer. He subsequently underwent prostate biopsy, which revealed histologic features similar to those of the pelvic mass. Finally, he was diagnosed with prostate cancer with lymph node metastasis. We report a case in which transcolonic EUS-FNA using a forward-viewing echoendoscope was performed for less invasive diagnosis of a pelvic mass.
