Rindi G, Mete O, Uccella S, Basturk O, La Rosa S, Brosens LAA, et al. Overview of the 2022 WHO classification of neuroendocrine neoplasms. Endocr Pathol. 2022;33:115–54.

Article  CAS  PubMed  Google Scholar 

Caplin M, Sundin A, Nillson O, Baum RP, Klose KJ, Kelestimur F, et al. Enets Consensus Guidelines for the management of patients with digestive neuroendocrine neoplasms: colorectal neuroendocrine neoplasms. Neuroendocrinology. 2012;95:88–97.

Article  CAS  PubMed  Google Scholar 

Dasari A, Shen C, Halperin D, Zhao B, Zhou S, Xu Y, et al. Trends in the incidence, prevalence, and survival outcomes in patients with neuroendocrine tumors in the United States. JAMA Oncol. 2017;3:1335–42.

Article  PubMed  PubMed Central  Google Scholar 

Anthony LB, Strosberg JR, Klimstra DS, Maples WJ, O’Dorisio TM, Warner RR, et al. The NANETS consensus guidelines for the diagnosis and management of gastrointestinal neuroendocrine tumors (nets): well-differentiated nets of the distal colon and rectum. Pancreas. 2010;39:767–74.

Article  PubMed  Google Scholar 

Gallo C, Rossi RE, Cavalcoli F, Barbaro F, Boškoski I, Invernizzi P, et al. Rectal neuroendocrine tumors: current advances in management, treatment, and surveillance. World J Gastroenterol. 2022;28:1123–38.

Article  PubMed  PubMed Central  Google Scholar 

Ramage JK, Valle JW, Nieveen Van Dijkum EJM, Sundin A, Pascher A, Couvelard A, et al. Colorectal neuroendocrine neoplasms: areas of unmet need. Neuroendocrinology. 2019;108:45–53.

Shields CJ, Tiret E, Winter DC, International Rectal Carcinoid Study Group. Carcinoid tumors of the rectum: a multi-institutional international collaboration. Ann Surg. 2010;252:750–5.

Sohn B, Kwon Y, Ryoo SB, Song I, Kwon YH, Lee DW, et al. Predictive factors for lymph node metastasis and prognostic factors for survival in rectal neuroendocrine tumors. J Gastrointest Surg. 2017;21:2066–74.

Article  PubMed  Google Scholar 

Kasuga A, Chino A, Uragami N, Kishihara T, Igarashi M, Fujita R, et al. Treatment strategy for rectal carcinoids: a clinicopathological analysis of 229 cases at a single cancer institution. J Gastroenterol Hepatol. 2012;27:1801–7.

Article  PubMed  Google Scholar 

Concors SJ, Sinnamon AJ, Folkert IW, Mahmoud NN, Fraker DL, Paulson EC, et al. Predictors of metastases in rectal neuroendocrine tumors: results of a national cohort study. Dis Colon Rectum. 2018;61:1372–9.

Article  PubMed  Google Scholar 

Sekiguchi M, Hotta K, Takeuchi Y, Tanaka S, Yamamoto H, Shinmura K, et al. Characteristics of colorectal neuroendocrine tumors in patients prospectively enrolled in a Japanese multicenter study: a first report from the C-NET STUDY. J Gastroenterol. 2022;57:547–58.

Article  PubMed  Google Scholar 

Beppu N, Niki M, Kimura F, Matsubara N, Tomita N, Yanagi H, et al. A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node. Mol Clin Oncol. 2016;4:549–52.

Article  PubMed  PubMed Central  Google Scholar 

Fujii Y, Kobayashi K, Kimura S, Uehara S, Miyai H, Takiguchi S. Indications for lateral lymph node dissection in patients with rectal neuroendocrine tumors: A case report and review of the literature. Mol Clin Oncol. 2021;14:80.

Article  PubMed  PubMed Central  Google Scholar 

Shin S, Maeng YI, Jung S, Yang CS. A small, low-grade rectal neuroendocrine tumor with lateral pelvic lymph node metastasis: a case report. Ann Coloproctol. 2022;38:327–31.

Article  PubMed  PubMed Central  Google Scholar 

Tsukamoto S, Fujita S, Yamaguchi T, Yamamoto S, Akasu T, et al. Clinicopathological characteristics and prognosis of rectal weoo-differentiated neuroendocrine tumors. Int J Colorectal Dis. 2008;23:1109–13.

Article  PubMed  Google Scholar 

Akiyoshi T, Watanabe T, Miyata S, Kotake K, Muto T, Sugihara K, et al. Results of a Japanese nationwide multi-institutional study on lateral pelvic lymph node metastasis in low rectal cancer: is it regional or distant disease? Ann Surg. 2012;255:1129–34.

Article  PubMed  Google Scholar 

Kanemitsu Y, Komori K, Shida D, Ochiai H, Tsukamoto S, Kinoshita T, et al. Potential impact of lateral lymph node dissection (LLND) for low rectal cancer on prognoses and local control: A comparison of 2 high-volume centers in Japan that employ different policies concerning LLND. Surgery. 2017;162:303–14.

Article  PubMed  Google Scholar 

Zhou S, Jiang Y, Pei W, Liang J, Zhou Z. Risk factors and prognostic significance of lateral pelvic lymph node dissection after neoadjuvant chemoradiotherapy for rectal patients with clinically suspected lateral lymph node metastasis. BMC Surg. 2021;21:441.

Article  PubMed  PubMed Central  Google Scholar 

Takatsu Y, Fukunaga Y, Nagasaki T, Akiyoshi T, Konishi T, Fujimoto Y, et al. Short- and long-term outcomes of laparoscopic total mesenteric excision for neuroendocrine tumors of the rectum. Dis Colon Rectum. 2017;60:284–9.

Article  PubMed  Google Scholar 

Ushigome H, Fukunaga Y, Nagasaki T, Akiyoshi T, Konishi T, Fujimoto Y, et al. Difficulty of predicting lymph node metastasis on CT in patients with rectal neuroendocrine tumors. PLoS ONE. 2019;14: e0211675.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Ito T, Masui T, Komoto I, Doi R, Osamura RY, Sakurai A, et al. JNETS clinical practice guidelines for gastroenteropancreatic neuroendocrine neoplasms: diagnosis, treatment, and follow-up: a synopsis. J Gastroenterol. 2021;56:1033–44.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Ramage JK, de Herder WW, Delle Fave G, Ferolla P, Ferone D, Ito T, et al. Enets Consensus guidelines update for colorectal neuroendocrine neoplasms. Neuroendocrinology. 2016;103:139–43.

Article  CAS  PubMed  Google Scholar 

Akiyoshi T, Ueno M, Matsueda K, Konishi T, Fujimoto Y, Nagayama S, et al. Selective lateral pelvic lymph node dissection in patients with advanced low rectal cancer treated with preoperative chemoradiotherapy based on pretreatment imaging. Ann Surg Oncol. 2014;21:189–96.

Article  PubMed  Google Scholar 

Weinstock B, Ward SC, Harpaz N, Warner RR, Itzkowitz S, Kim MK. Clinical and prognostic features of rectal neuroendocrine tumors. Neuroendocrinology. 2013;98:180–7.

Article  CAS  PubMed  Google Scholar 

Watanabe T, Itabashi M, Shimada Y, Tanaka S, Ito Y, Ajioka Y, et al. Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2010 for the treatment of colorectal cancer. Int J Clin Oncol. 2012;17:1–29.

Article  PubMed  Google Scholar 

Yamamoto Y, Takahashi K, Yasuno M, Sakoma T, Mori T. Clinicopathological characteristics of skipping lymph node metastases in patients with colorectal cancer. Jpn J Clin Oncol. 1998;28:378–82.

Article  CAS  PubMed  Google Scholar 

Sato H, Koide Y, Mizuno M, Morise Z, Uyama I. Study of skip metastasis to lateral lymph nodes in low rectal cancer (in Japanese). Gan To Kagaku Ryoho. 2019;46:2048–50.

CAS  PubMed  Google Scholar