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Peer-reviewedCC BY-NC-NDJournal of the anus, rectum and colon

Early Detection of Small Bowel Cancer Associated with Crohn's Disease During Routine Postoperative Endoscopic Follow-up: A Case Report.

  • Issei Takeshita1
  • Shugo Uwatoko2
  • Tatsuhisa Yasaka3
  • Kitaro Futami4
  • Satoshi Nimura5
  • Takashi Hisabe3
  • Masato Watanabe2
5 affiliations
  1. 1Department of Gastroenterology Surgery, Fukuoka University Hospital, Fukuoka, Japan.
  2. 2Department of Surgery, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan.
  3. 3Department of Gastroenterology, Chikushi Hospital, Fukuoka University, Chikushino, Fukuoka, Japan.
  4. 4Matsunaga Hospital, Fukuoka, Japan.
  5. 5Department of Pathology, Chikushi Hospital, Fukuoka University, Chikushino, Fukuoka, Japan.
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Abstract

A 48-year-old man with Crohn's disease (CD), who had previously undergone two intestinal surgeries, was referred to our hospital for treatment of perianal lesions. After referral, routine endoscopic follow-up was performed on the remaining colon and the accessible terminal ileum in conjunction with examination under anesthesia (EUA) for the perianal lesions. In the ninth year following referral, dysplastic epithelium was detected in the ileum on the oral side of the anastomosis during EUA and endoscopic assessment. Dysplasia was confirmed again during the third examination after repeated evaluations, leading to ileocecal resection. Histopathological analysis revealed intramucosal adenocarcinoma. Because systematic surveillance for small bowel cancer in CD has not been standardized, this early-stage lesion was detected incidentally during routine postoperative endoscopic follow-up. The patient remained free of both CD recurrence and cancer relapse for 7 years postoperatively.

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Cite

BibTeXRIS
BibTeX
@article{takeshita2026early,
  title = {{Early Detection of Small Bowel Cancer Associated with Crohn's Disease During Routine Postoperative Endoscopic Follow-up: A Case Report.}},
  author = {Issei Takeshita and Shugo Uwatoko and Tatsuhisa Yasaka and Kitaro Futami and Satoshi Nimura and Takashi Hisabe and Masato Watanabe},
  journal = {Journal of the anus, rectum and colon},
  year = {2026},
  month = oct,
  doi = {10.23922/jarc.2026-030},
  url = {https://europepmc.org/article/MED/42952671},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Early Detection of Small Bowel Cancer Associated with Crohn's Disease During Routine Postoperative Endoscopic Follow-up: A Case Report.
AU  - Issei Takeshita
AU  - Shugo Uwatoko
AU  - Tatsuhisa Yasaka
AU  - Kitaro Futami
AU  - Satoshi Nimura
AU  - Takashi Hisabe
AU  - Masato Watanabe
PY  - 2026
DA  - 2026/10/25
JO  - Journal of the anus, rectum and colon
DO  - 10.23922/jarc.2026-030
UR  - https://europepmc.org/article/MED/42952671
AB  - A 48-year-old man with Crohn's disease (CD), who had previously undergone two intestinal surgeries, was referred to our hospital for treatment of perianal lesions. After referral, routine endoscopic follow-up was performed on the remaining colon and the accessible terminal ileum in conjunction with examination under anesthesia (EUA) for the perianal lesions. In the ninth year following referral, dysplastic epithelium was detected in the ileum on the oral side of the anastomosis during EUA and endoscopic assessment. Dysplasia was confirmed again during the third examination after repeated evaluations, leading to ileocecal resection. Histopathological analysis revealed intramucosal adenocarcinoma. Because systematic surveillance for small bowel cancer in CD has not been standardized, this early-stage lesion was detected incidentally during routine postoperative endoscopic follow-up. The patient remained free of both CD recurrence and cancer relapse for 7 years postoperatively.
SN  - 2432-3853
ER  -