Abstract | OBJECTIVE: METHODS: RESULTS: First, second, third, fourth and fifth total colonoscopy were performed in 256 (95%), 151 (56%), 60 (22%), 23 (8.5%) and 7 (2.6%) patients at a median of 14, 31, 42, 54 and 72 months after radiotherapy, respectively. The prevalence proportion of colorectal cancer in the first colonoscopy since radiotherapy was 3.9%. Twelve (4.4%) patients were diagnosed with colorectal cancer, including four invasive cancers, during a follow-up period. Eight of these 12 patients had not experienced rectal bleeding. The median time to diagnosis of colorectal cancer was 21 months. Chronic radiation proctitis was observed in 136 (50%) patients, including 67 (25%) patients with symptomatic bleeding. CONCLUSIONS:
|
Authors | Yuki Nakamura, Takahiko Soma, Keita Izumi, Yasuyuki Sakai, Hiroki Ushijima, Shigehiro Kudo, Yoshihiro Saito, Yukio Kageyama |
Journal | Japanese journal of clinical oncology
(Jpn J Clin Oncol)
Vol. 51
Issue 8
Pg. 1298-1302
(Aug 01 2021)
ISSN: 1465-3621 [Electronic] England |
PMID | 33889961
(Publication Type: Journal Article)
|
Copyright | © The Author(s) 2021. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: [email protected]. |
Topics |
- Colonoscopy
- Colorectal Neoplasms
- Early Detection of Cancer
- Humans
- Male
- Neoplasms, Radiation-Induced
(diagnosis, etiology)
- Proctitis
(diagnosis, etiology)
- Prostatic Neoplasms
(radiotherapy)
- Radiation Injuries
(diagnosis, etiology)
|