- Rectal Invasion by Prostatic Adenocarcinoma That Was Initially Diagnosed in a Rectal Polyp on Colonoscopy
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Ghilsuk Yoon, Man-Hoon Han, An Na Seo
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J Pathol Transl Med. 2019;53(4):266-269. Published online April 11, 2019
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DOI: https://doi.org/10.4132/jptm.2019.03.25
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- Despite anatomical proximity, prostatic adenocarcinoma with rectal invasion is extremely rare. We present a case of rectal invasion by prostatic adenocarcinoma that was initially diagnosed from a rectal polyp biopsied on colonoscopy in a 69-year-old Korean man. He presented with dull anal pain and voiding discomfort for several days. Computed tomography revealed either prostatic adenocarcinoma with rectal invasion or rectal adenocarcinoma with prostatic invasion. His tumor marker profile showed normal prostate specific antigen (PSA) level and significantly elevated carcinoembryonic antigen level. Colonoscopy was performed, and a specimen was obtained from a round, 1.5 cm, sessile polyp that was 1.5 cm above the anal verge. Microscopically, glandular tumor structures infiltrated into the rectal mucosa and submucosa. Immunohistochemically, the tumor cells showed alpha-methylacyl-CoA-racemase positivity, PSA positivity, and caudal-related homeobox 2 negativity. The final diagnosis of the rectal polyp was consistent with prostatic adenocarcinoma. Here, we present a rare case that could have been misdiagnosed as rectal adenocarcinoma.
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Citations
Citations to this article as recorded by  - An Interesting Case of Prostate Cancer Presenting With Colonic Metastasis
Shawn Keating, Ayesha Imtiaz, Kenneth Nahum, Ankita Prasad, Pramil Cheriyath
Cureus.2023;[Epub] CrossRef - Metastase d’un adenocarcinome prostatique au sein d’un polype colique. À propos d’un cas et revue de la littérature
Guillaume Abitbol, Clémence Barthomeuf, Olivier Varennes, Marine Clement, Sami Hakim, Denis Chatelain
Annales de Pathologie.2023; 43(4): 342. CrossRef - Prostate cancer invading rectal serosa and anal sphincter treated with definitive radiation therapy: Case report and review of the literature
Mi-Jo Lee
Journal of Cancer Research and Therapeutics.2023;[Epub] CrossRef - Isolated Rectal Metastases from Locally Advanced Carcinoma Prostate Detected by 18F-PSMA-1007 PET/CT
Shashank Shekhar Singh, Rani Kunti Randhir Singh, Narvesh Kumar, Harshvardhan Atrey
World Journal of Nuclear Medicine.2022; 21(03): 248. CrossRef - Rectal Invasion by Metastatic Prostate Adenocarcinoma
Anshu Wadehra, Samer Alkassis, Aliza Rizwan, Omid Yazdanpanah
Cureus.2021;[Epub] CrossRef - Metastatic Prostate Cancer Presenting as a Rectal Polyp: A Rare Occurrence
Ese Uwagbale, Ifeanyichukwu Onukogu, Vimal Bodiwala, Solomon Agbroko, Niket Sonpal
Cureus.2021;[Epub] CrossRef - Local Staging of Prostate Cancer with Multiparametric MRI
Nandan Keshav, Mark D. Ehrhart, Steven C. Eberhardt, Martha F. Terrazas
Seminars in Roentgenology.2021; 56(4): 366. CrossRef
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