Annals of Coloproctology

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Colorectal cancer

Upfront surgery versus preoperative chemoradiotherapy: a comparative survival analysis for stage II/III resectable rectal cancer: Nattapanee Sukphol, Thitithep Limvorapitak; Ann Coloproctol. 2026;42(1):115-126. Published online February 26, 2026; DOI: https://doi.org/10.3393/ac.2025.00724.0103

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Graphical Abstract Abstract PDF: Purpose
Current international guidelines recommend neoadjuvant chemoradiotherapy (nCRT) followed by total mesorectal excision (TME) for locally advanced rectal cancer (LARC). Although nCRT reduces the risk of local recurrence, it has not demonstrated a survival advantage and increases the likelihood of preoperative overtreatment. This study investigated whether upfront TME could be offered without compromising oncologic outcomes.
Methods
From January 2015 to December 2020, patients with stage II/III LARC who underwent either upfront TME or nCRT followed by TME were analyzed using propensity score matching. Long-term survival outcomes were compared between the 2 groups. The primary endpoint was 5-year disease-free survival. Secondary endpoints included 5-year local recurrence-free survival, distant metastasis-free survival, and overall survival.
Results
A total of 348 patients were included, of whom 138 (39.7%) underwent upfront TME. The upfront TME group showed significantly higher 5-year disease-free survival (63.3% vs. 43.9%) and distant metastasis-free survival (88.1% vs. 70.3%). However, after excluding patients with preoperative mesorectal fascia (MRF) involvement, no significant differences were observed in long-term oncologic outcomes. Following 1:1 propensity score matching, 47 patients from each group were compared. Kaplan-Meier survival analysis revealed no significant differences in any endpoints. Cox regression analysis of the matched cohort indicated that preoperative MRF involvement, positive extramural vascular invasion, and tumor deposits were not independent prognostic factors.
Conclusion
Upfront TME may represent a viable treatment option for selected patients with LARC, particularly those without MRF involvement, providing comparable oncologic outcomes to the standard nCRT approach.

Colorectal cancer

Long-term bowel functional outcomes following anal sphincter-preserving surgery for upper and middle rectal cancer: a single-center longitudinal study: Ahmad Sakr, Seung Yoon Yang, Min Soo Cho, Hyuk Hur, Byung Soh Min, Kang Young Lee, Nam Kyu Kim; Ann Coloproctol. 2024;40(1):27-35. Published online February 28, 2024; DOI: https://doi.org/10.3393/ac.2022.01067.0152

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3 Web of Science
3 Citations

Abstract PDF

Purpose
Despite advances in neoadjuvant chemoradiotherapy and anal sphincter-preserving surgery for rectal cancer, bowel dysfunction is still unavoidable and negatively affects patients’ quality of life. In this longitudinal study, we aimed to investigate the changes in bowel function with follow-up time and the effect of neoadjuvant chemoradiotherapy on bowel function following low anterior resection for rectal cancer.
Methods
In this study, 171 patients with upper or middle rectal cancer who underwent low anterior resection between 2012 and 2018 were included. Bowel function was assessed longitudinally with Memorial Sloan Kettering Cancer Center Bowel Function Instrument and Wexner scores every 6 months after restoration of bowel continuity. Patients with at least 2 follow-up visits were included.
Results
Overall, 100 patients received neoadjuvant chemoradiotherapy. Urgency, soilage, and fecal incontinence were noted within 24 months in the patients treated with neoadjuvant chemoradiotherapy. After 2 years of follow-up, significant bowel dysfunction and fecal incontinence were observed in the neoadjuvant chemoradiotherapy group. Low tumor level and neoadjuvant chemoradiotherapy were associated with delayed bowel dysfunction.
Conclusion
Neoadjuvant chemoradiotherapy in combination with low tumor level was significantly associated with delayed bowel dysfunction even after 2 years of follow-up. Therefore, careful selection and discussion with patients are paramount.

Citations

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Funktionelle Folgen von Radiotherapie, Chemotherapie und Operation bei der Behandlung des Rektumkarzinoms
Philipp Rhode, Matthias Mehdorn, Undine Gabriele Lange, Sebastian Murad Rabe, Johannes Quart, Robert Nowotny, Patrick Sven Plum, Stefan Niebisch, Sigmar Stelzner
Zentralblatt für Chirurgie - Zeitschrift für Allgemeine, Viszeral-, Thorax- und Gefäßchirurgie.2025; 150(04): 353. CrossRef
Efficacy of Neoadjuvant Hypofractionated Chemoradiotherapy in Elderly Patients with Locally Advanced Rectal Cancer: A Single-Center Retrospective Analysis
Jae Seung Kim, Jaram Lee, Hyeung-min Park, Soo Young Lee, Chang Hyun Kim, Hyeong Rok Kim
Cancers.2024; 16(24): 4280. CrossRef
Beyond survival: a comprehensive review of quality of life in rectal cancer patients
Won Beom Jung
Annals of Coloproctology.2024; 40(6): 527. CrossRef

Malignant disease, Rectal cancer,Prognosis and adjuvant therapy,Colorectal cancer

Lateral Pelvic Lymph Node Dissection After Neoadjuvant Chemoradiotherapy in Patients With Rectal Cancer: A Single-Center Experience and Literature Review: Min Chul Kim, Jae Hwan Oh; Ann Coloproctol. 2021;37(6):382-394. Published online December 22, 2021; DOI: https://doi.org/10.3393/ac.2021.00913.0130

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205 Download
23 Web of Science
23 Citations

Abstract PDF Supplementary Material

Purpose
We aimed to evaluate the surgicopathological outcomes of lateral pelvic lymph node dissection (LPLD) and long-term oncological outcomes of selective LPLD after neoadjuvant chemoradiotherapy (nCRT) in patients with locally advanced rectal cancer and compare them to those of total mesorectal excision (TME) alone based on pretreatment magnetic resonance imaging (MRI).
Methods
We compared the TME-alone group (2001–2009, n=102) with the TME with LPLD group (2011–2016, n=69), both groups having lateral lymph nodes (LLNs) of ≥5 mm in short axis diameter. The surgicopathological outcomes were analyzed retrospectively. Oncological outcomes were analyzed using the Kaplan-Meier method.
Results
The rates of overall postoperative 30-day morbidity (42.0% vs. 26.5%, P=0.095) and urinary retention (13.7% vs. 10.1%, P=0.484) were not significantly different between the LPLD and TME-alone groups, respectively. Pathologically proven LLN metastasis was identified in 24 (34.8%) LPLD cases after nCRT. The LPLD group showed a lower 5-year local recurrence (LR) rate (27.9% vs. 4.6%, P<0.001) and better recurrence-free survival (RFS) (59.6% vs. 78.2%, P=0.008) than those of the TME-alone group, while the 5-year overall survival was not significantly different between the 2 groups (76.2% vs. 86.5%, P=0.094).
Conclusion
This study suggests that LPLD is a safe and feasible procedure. The oncological outcomes suggest that selective LPLD improves LR and RFS in patients with clinically suspicious LLNs on pretreatment MRI. Considering that lateral nodal disease is not common, a multicenter large-scale study is necessary.

Citations

Citations to this article as recorded by

The Korean Rectal Cancer Multidisciplinary Committee Clinical Practice Guidelines for Rectal Cancer version 2.0
Hyo Seon Ryu, Hyun Jung Kim, Dong Hyun Kang, Yoo-Kang Kwak, Han Deok Kwak, Yoon-Hye Kwon, Dalyon Kim, Baek-Hui Kim, Jae Hyun Kim, Ji Hun Kim, Jin Won Kim, Tae Hyung Kim, Hae Young Kim, Soo Min Nam, Gyoung Tae Noh, Jun Woo Bong, Nak Song Sung, Seon Hui Shi
Annals of Coloproctology.2026; 42(1): 4. CrossRef
MRI-based scoring systems for selective lateral lymph node dissection in locally advanced low rectal cancer after neoadjuvant chemoradiotherapy
Min Jeong Cho, Kyunghwa Han, Hye Jung Shin, Woong Sub Koom, Kang Young Lee, Joo Hee Kim, Joon Seok Lim
European Radiology.2025; 35(8): 4967. CrossRef
Feasibility and limitations of combined treatment for lateral pelvic lymph node metastases in rectal cancer
Ying-Zi Zheng, Fang-Fang Yan, Lian-Xiang Luo
World Journal of Clinical Oncology.2024; 15(5): 591. CrossRef
Totally Extraperitoneal Approach for Recurrent Lateral Pelvic Lymph Nodes After Rectal Cancer Surgery
Tae-Gyun Lee, Hong-Min Ahn, Hye-Rim Shin, Mi Jeong Choi, Min Hyeong Jo, Heung-Kwon Oh, Duck-Woo Kim, Sung-Bum Kang
Diseases of the Colon & Rectum.2024; 67(6): e360. CrossRef
Identification of lateral pelvic nodes without metastasis in patients with rectal cancer treated with preoperative chemoradiotherapy or chemotherapy based on magnetic resonance imaging
Nobuaki Hoshino, Yudai Fukui, Kohei Ueno, Koya Hida, Kazutaka Obama, Kazuhiro Sakamoto, Hirotoshi Kobayashi, Michio Itabashi, Soichiro Ishihara, Kazushige Kawai, Yoichi Ajioka
Annals of Gastroenterological Surgery.2024; 8(5): 732. CrossRef
Survival analysis in rectal cancer patients after lateral lymph node dissection: Exploring the necessity of nCRT for suspected lateral lymph node metastasis
Jiafei Liu, Peishi Jiang, Zhichun Zhang, Hongjie Yang, Yuanda Zhou, Peng Li, Qingsheng Zeng, Xipeng Zhang, Yi Sun
Current Problems in Surgery.2024; 61(8): 101525. CrossRef
Clinical outcomes of neoadjuvant chemoradiotherapy followed by total mesorectal excision in locally advanced rectal cancer with mesorectal fascia involvement
Jeong Ha Lee, Nalee Kim, Jeong Il Yu, Gyu Sang Yoo, Hee Chul Park, Woo-Yong Lee, Seong Hyeon Yun, Hee Cheol Kim, Yong Beom Cho, Jung Wook Huh, Yoon Ah Park, Jung Kyong Shin, Joon Oh Park, Seung Tae Kim, Young Suk Park, Jeeyun Lee, Won Ki Kang
Radiation Oncology Journal.2024; 42(2): 130. CrossRef
Literature research on the low rectal cancer complicated with lateral pelvic lymph node metastasis
Miao He, Jing Fan
Asian Journal of Surgery.2024; 47(10): 4575. CrossRef
Innovációk a colorectalis sebészetben
Balázs Bánky, András Fülöp, Viktória Bencze, Lóránd Lakatos, Petra Rozman, Attila Szijártó
Orvosi Hetilap.2024; 165(2): 43. CrossRef
Meta-analysis of the efficacy and safety of robot-assisted comparative laparoscopic surgery in lateral lymph node dissection for rectal cancer
Hao Shi, Xianhao Yi, Xin Yan, Wenjie Wu, Hui Ouyang, Chengke Ou, Xiangheng Chen
Surgical Endoscopy.2024; 38(10): 5584. CrossRef
The Role of Lateral Pelvic Lymph Node Dissection in Middle and Lower Rectal Cancer (Stage II or III): A Literature Review
Alexandra-Eleftheria Menni, Georgios Tzikos, Patroklos Goulas, Stylianos Apostolidis
Cureus.2024;[Epub] CrossRef
Lateral pelvic lymph node positivity (LPLNP) score: predictive clinic-radiological model of lateral pelvic lymph node involvement in rectal cancer patients
Petr Tsarkov, Vladimir Balaban, Harutyun Babajanyan, Abe Fingerhut, Inna Tulina, Mingze He
International Journal of Colorectal Disease.2024;[Epub] CrossRef
Short-term outcomes of 47 selective laparoscopic lymph node dissection for rectal cancer: A retrospective study
Xiajuan Xue, Shuijie Lin, Qunzhang Zeng, Yincong Guo
Medicine.2024; 103(43): e39684. CrossRef
Fluorescence-guided colorectal surgery: applications, clinical results, and protocols
Jin-Min Jung, In Ja Park, Eun Jung Park, Gyung Mo Son
Annals of Surgical Treatment and Research.2023; 105(5): 252. CrossRef
Development of a Diagnostic Artificial Intelligence Tool for Lateral Lymph Node Metastasis in Advanced Rectal Cancer
Kosuke Ozaki, Yusuke Kurose, Kazushige Kawai, Hirotoshi Kobayashi, Michio Itabashi, Yojiro Hashiguchi, Takuya Miura, Akio Shiomi, Tatsuya Harada, Yoichi Ajioka
Diseases of the Colon & Rectum.2023; 66(12): e1246. CrossRef
Advances in the Treatment of Colorectal Cancer with Peritoneal Metastases: A Focus on Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy
Youngbae Jeon, Eun Jung Park
The Ewha Medical Journal.2023;[Epub] CrossRef
Clinical Implication of Lateral Pelvic Lymph Node Metastasis in Rectal Cancer Treated with Neoadjuvant Chemoradiotherapy
In Ja Park
The Ewha Medical Journal.2022; 45(1): 3. CrossRef
Current status and role of robotic approach in patients with low-lying rectal cancer
Hyo Seon Ryu, Jin Kim
Annals of Surgical Treatment and Research.2022; 103(1): 1. CrossRef
Multidisciplinary treatment strategy for early colon cancer
Gyung Mo Son, Su Bum Park, Tae Un Kim, Byung-Soo Park, In Young Lee, Joo-Young Na, Dong Hoon Shin, Sang Bo Oh, Sung Hwan Cho, Hyun Sung Kim, Hyung Wook Kim
Journal of the Korean Medical Association.2022; 65(9): 558. CrossRef
Robotic surgery for colorectal cancer
Sung Uk Bae
Journal of the Korean Medical Association.2022; 65(9): 577. CrossRef
Multidisciplinary Treatment Strategy for Early Colon Cancer: A Review-An English Version
Gyung Mo Son, Su Bum Park, Tae Un Kim, Byung-Soo Park, In Young Lee, Joo-Young Na, Dong Hoon Shin, Sang Bo Oh, Sung Hwan Cho, Hyun Sung Kim, Hyung Wook Kim
Journal of the Anus, Rectum and Colon.2022; 6(4): 203. CrossRef
Current Status and Future of Robotic Surgery for Colorectal Cancer-An English Version
Sung Uk Bae
Journal of the Anus, Rectum and Colon.2022; 6(4): 221. CrossRef
It Is a Pleasure to Announce the Issue Titled “Master Class 2021” in Annals of Coloproctology
In Ja Park
Annals of Coloproctology.2021; 37(6): 349. CrossRef

Current Practice in Asia-Pacific Region

Malignant disease, Rectal cancer

Current Status of “Watch-and-Wait” Rectal Cancer Treatment in Asia-Pacific Countries: Jung Wook Huh, Kotaro Maeda, Zheng Liu, Xishan Wang, April Camilla Roslani, Woo Yong Lee; Ann Coloproctol. 2020;36(2):70-77. Published online January 31, 2020; DOI: https://doi.org/10.3393/ac.2020.01.19

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191 Download
17 Web of Science
16 Citations

Abstract PDF

Purpose
Current acceptance of the watch-and-wait (W&W) approach by surgeons in Asia-Pacific countries is unknown. An international survey was performed to determine status of the W&W approach on behalf of the Asia-Pacific Federation of Coloproctology (APFCP).
Methods
Surgeons in the APFCP completed an Institutional Review Board-approved anonymous e-survey and/or printed letters (for China) containing 19 questions regarding nonsurgical close observation in patients who achieved clinical complete response (cCR) to neoadjuvant chemoradiotherapy (nCRT).
Results
Of the 417 responses, 80.8% (n = 337) supported the W&W approach and 65.5% (n = 273) treated patients who achieved cCR after nCRT. Importantly, 78% of participants (n = 326) preferred a selective W&W approach in patients with old age and medical comorbidities who achieved cCR. In regard to restaging methods after nCRT, the majority of respondents based their decision to use W&W on a combination of magnetic resonance imaging results (94.5%, n = 394) with other test results. For interval between nCRT completion and tumor response assessment, most participants used 8 weeks (n = 154, 36.9%), followed by 6 weeks (n = 127, 30.5%) and 4 weeks (n = 102, 24.5%). In response to the question of how often responders followed-up after W&W, the predominant period was every 3 months (209 participants, 50.1%) followed by every 2 months (75 participants, 18.0%). If local regrowth was found during follow-up, most participants (79.9%, n = 333) recommended radical surgery as an initial management.
Conclusion
The W&W approach is supported by 80% of Asia-Pacific surgeons and is practiced at 65%, although heterogeneous hospital or society protocols are also observed. These results inform oncologists of future clinical study participation.

Citations

Citations to this article as recorded by

Effects of clinical information on the treatment decisions for good responders to neoadjuvant chemoradiotherapy among rectal cancer patients
Eon Bin Kim, In Ja Park, Hwa Jung Kim, Jong Keon Jang, Seong Ho Park, Young Il Kim, Min Hyun Kim, Jong Lyul Lee, Chan Wook Kim, Yong Sik Yoon, Seok-Byung Lim, Chang Sik Yu
Annals of Coloproctology.2025; 41(5): 473. CrossRef
Patient and multidisciplinary team perspectives on watch and wait in rectal cancer
Helen Mohan, Mohammed Rabie, Ciaran Walsh, Deena Harji, Paul Sutton, Ian Geh, Ian Jackson, Emma Helbren, Martyn Evans, John T. Jenkins
Colorectal Disease.2023; 25(7): 1489. CrossRef
Organ preservation for early rectal cancer using preoperative chemoradiotherapy
Gyung Mo Son
Annals of Coloproctology.2023; 39(3): 191. CrossRef
International Society of University Colon and Rectal Surgeons survey of surgeons’ preference on rectal cancer treatment
Audrius Dulskas, Philip F. Caushaj, Domas Grigoravicius, Liu Zheng, Richard Fortunato, Joseph W. Nunoo-Mensah, Narimantas E. Samalavicius
Annals of Coloproctology.2023; 39(4): 307. CrossRef
Clinical Implication of Lateral Pelvic Lymph Node Metastasis in Rectal Cancer Treated with Neoadjuvant Chemoradiotherapy
In Ja Park
The Ewha Medical Journal.2022; 45(1): 3. CrossRef
Multidisciplinary treatment strategy for early rectal cancer
Gyung Mo Son, In Young Lee, Sung Hwan Cho, Byung-Soo Park, Hyun Sung Kim, Su Bum Park, Hyung Wook Kim, Sang Bo Oh, Tae Un Kim, Dong Hoon Shin
Precision and Future Medicine.2022; 6(1): 32. CrossRef
Watch and wait strategies for rectal cancer: A systematic review
In Ja Park
Precision and Future Medicine.2022; 6(2): 91. CrossRef
Surgical treatment for metastatic colorectal cancer
Eun Jung Park, Seung Hyuk Baik
Journal of the Korean Medical Association.2022; 65(9): 568. CrossRef
Correlation between T stage and lymph node metastasis in rectal cancer treated with preoperative chemoradiotherapy
Seijong Kim, Jung Wook Huh, Woo Yong Lee, Seong Hyeon Yun, Hee Cheol Kim, Yong Beom Cho, Yoonah Park, Jung Kyong Shin
Therapeutic Advances in Medical Oncology.2022;[Epub] CrossRef
Recent Advance in the Surgical Treatment of Metastatic Colorectal Cancer-An English Version
Eun Jung Park, Seung Hyuk Baik
Journal of the Anus, Rectum and Colon.2022; 6(4): 213. CrossRef
Update on Diagnosis and Treatment of Colorectal Cancer
Chan Wook Kim
The Ewha Medical Journal.2022;[Epub] CrossRef
The watch-and-wait strategy versus radical resection for rectal cancer patients with a good response (≤ycT2) after neoadjuvant chemoradiotherapy
Chungyeop Lee, In Ja Park, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim
Annals of Surgical Treatment and Research.2022; 103(6): 350. CrossRef
Contemporary snapshot of tumor regression grade (TRG) distribution in locally advanced rectal cancer: a cross sectional multicentric experience
Paola Germani, Francesca Di Candido, Daniel Léonard, Dajana Cuicchi, Ugo Elmore, Marco Ettore Allaix, Vittoria Pia Barbieri, Laura D’Allens, Seraina Faes, Marika Milani, Damiano Caputo, Carmen Martinez, Jan Grosek, Valerio Caracino, Niki Christou, Sapho X
Updates in Surgery.2021; 73(5): 1795. CrossRef
Non-operative Management (NOM) of Rectal Cancer: Literature Review and Translation of Evidence into Practice
Christopher J. Anker, Dmitriy Akselrod, Steven Ades, Nancy A. Bianchi, Nataniel H. Lester-Coll, Peter A. Cataldo
Current Colorectal Cancer Reports.2021; 17(2): 23. CrossRef
Comparison between Local Excision and Radical Resection for the Treatment of Rectal Cancer in ypT0-1 Patients: An Analysis of the Clinicopathological Factors and Survival Rates
Soo Young Oh, In Ja Park, Young IL Kim, Jong-Lyul Lee, Chan Wook Kim, Yong Sik Yoon, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim
Cancers.2021; 13(19): 4823. CrossRef
Widening role of multidisciplinary treatment for rectal cancer: toward diversity of cancer care
Yong Beom Cho
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