Journal of surgical case reports · 2024
A case of rectal metastasis of prostate cancer mimicking extramural growth-type rectal tumor.
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Hike Shutaro, Endo Satoshi, Ota Masayuki, Ohira Gaku, Maruyama Michihiro, Imanishi Shunsuke, Maruyama Tetsuro, Tochigi Toru, Amagai Hiroyuki, Shiraishi Tadashi, Hirata Atsushi, Mamiya Hisashi, Iwata Moe, Kakimoto Ayano, Matsubara Hisahiro
Аннотация
Rectal metastases of prostate cancer are rare and may be difficult to diagnose. In this report, we describe a case in which an extramural growth-type rectal tumor was resected and pathologically diagnosed as prostate cancer metastasis. A 70-year-old man on hormone therapy for prostate cancer with seminal vesicle invasion and pelvic lymph node metastasis was referred to our department after an imaging scan showed an extramural growth-type rectal tumor. Endoscopic ultrasound-guided fine needle aspiration was considered for diagnosis, but the patient preferred an early resection without the exam, so surgery was performed. Histopathological examination revealed that the lesion was in the adventitia of the rectum and metastasis of prostate cancer. Metastatic lesions of prostate cancer are not indicated for resection. A detailed preoperative study with the possibility of prostate cancer metastasis in mind is necessary because it is relevant to choosing the treatment strategy.