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Case Reports
Rectal Invasion by Prostatic Adenocarcinoma That Was Initially Diagnosed in a Rectal Polyp on Colonoscopy
Ghilsuk Yoon, Man-Hoon Han, An Na Seo
J Pathol Transl Med. 2019;53(4):266-269.   Published online April 11, 2019
DOI: https://doi.org/10.4132/jptm.2019.03.25
  • 6,318 View
  • 124 Download
  • 9 Web of Science
  • 8 Crossref
AbstractAbstract PDF
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.

Citations

Citations to this article as recorded by  
  • 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.2024; 20(3): 1081.     CrossRef
  • Metastatic Adenocarcinoma of the Prostate Masquerading as a Splenic Flexure Colonic Polyp: A Diagnostic Conundrum
    Zakaria W Shkoukani, Alaa Chamsin, Mohamed I Abdulmajed
    Cureus.2024;[Epub]     CrossRef
  • 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
  • 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
Two Cases of Strongyloidiasis Diagnosed by Colonoscopic Biopsy.
Sang Chul Nam, Man Hoon Han, Young Su Kim, Yoon Seup Kum, In Soo Suh, Han Ik Bae
Korean J Pathol. 2007;41(5):343-346.
  • 1,855 View
  • 21 Download
AbstractAbstract PDF
Strongyloides stercoralis is an intestinal nematode that is able to infect the host tissue and persist for many years through autoinfection, and it causes life-threatening hyperinfection in immunocompromised hosts. We report here on two cases of strongyloidiasis that were diagnosed by colonoscopic biopsy. One case was a 73-year-old woman who was hospitalized with complaints of melena. She was being treated with corticosteroid due to her asthma and rheumatoid arthritis. The other case was a 63-year-old man who suffered with abdominal discomfort and severe loss of body weight (18 kg) for 2 months. In both cases, colonoscopic examination revealed polyps and petechiae at the entire colon. Microscopically, a small illdefined granuloma with a longitudinally sectioned parasite was seen on the colonoscopic biopsy. Endoscopic examination was done after suspecting parasitic infestation. The gastric and duodenal mucosa showed numerous cross sections of adult worms, eggs and larvae that were developing in crypts. Even if such a patient is in an asymptomatic state, this illness must be treated due to the potential for fatal autoinfection.

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