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Rare disease & stoma
A small, low-grade rectal neuroendocrine tumor with lateral pelvic lymph node metastasis: a case report
Seonhui Shin, Young-In Maeng, Seyun Jung, Chun-Seok Yang
Ann Coloproctol. 2022;38(4):327-331.   Published online March 7, 2022
DOI: https://doi.org/10.3393/ac.2021.00899.0128
  • 3,620 View
  • 172 Download
  • 4 Web of Science
  • 7 Citations
AbstractAbstract PDF
Rectal neuroendocrine tumors (NETs) are typically small lesions that are confined to the submucosa and have favorable behavior at the time of diagnosis. Local endoscopic or surgical resection is recommended because lymph node metastasis is very rare. In this report, we present the case of a 36-year-old male presenting with an incidentally found rectal mass during screening colonoscopy. Pathologic examination of the primary tumor revealed a 9-mm grade 1 NET with submucosal invasion and no significant aggressive factors except for central ulceration. However, radiologic studies revealed a suspected 2.6-cm mesorectal lymph node metastasis and multiple left internal iliac lymph node metastases. We performed laparoscopic intersphincteric resection with left lateral pelvic lymph node dissection. The final pathologic report revealed a metastatic lymph node with low grade, low mitotic count, and low Ki-67 index. We describe an overview of lymph node metastasis of rectal NETs focusing on lateral pelvic lymph node metastasis.

Citations

Citations to this article as recorded by  
  • Risk factors for and prognostic impact of lateral pelvic lymph node metastasis in patients with rectal neuroendocrine tumors: a single-center retrospective analysis of 214 cases with radical resection
    Tsubasa Sakurai, Y. Hiyoshi, N. Daitoku, S. Matsui, T. Mukai, T. Nagasaki, T. Yamaguchi, T. Akiyoshi, H. Kawachi, Y. Fukunaga
    Surgery Today.2025; 55(2): 144.     CrossRef
  • Construction and evaluation of the prediction model for advanced disease in well-differentiated colorectal neuroendocrine neoplasms less than 2 cm in diameter
    Hongda Yin, Yanan Chen, Wei Zhao, Fuqiang Zhao, Zhijun Huang, Aimin Yue, Zhijie Wang
    Heliyon.2025; 11(1): e41197.     CrossRef
  • Primary small rectal neuroendocrine tumor with pelvic lateral lymph nodes metastasis: A case report and review of literature
    Lihong Li, Ziyue Chen, Dajian Zhu, Qianbao Lv, Tianpeng Zhang, Jinsong Lai
    International Journal of Surgery Case Reports.2025; 127: 110963.     CrossRef
  • Risk factors for lateral pelvic lymph node metastasis in patients with rectal neuroendocrine tumors: a systematic review and meta-analysis
    Ziyue Chen, Dajian Zhu
    Frontiers in Oncology.2025;[Epub]     CrossRef
  • Successfully Resected Isolated Lateral Lymph Node Recurrence in a Patient with T1 Lower Rectal Cancer: Case Report and Literature Review
    Kazuma Rifu, Koji Koinuma, Hisanaga Horie, Katsusuke Mori, Daishi Naoi, Mineyuki Tojo, Yuko Homma, Satoshi Murahashi, Atsushi Kihara, Toshiki Mimura, Joji Kitayama, Naohiro Sata
    Journal of the Anus, Rectum and Colon.2024; 8(3): 259.     CrossRef
  • Clinical application of endoscopic ultrasonography in the management of rectal neuroendocrine tumors
    Soo-Young Na, Seong Jung Kim, Hyoun Woo Kang
    International Journal of Gastrointestinal Intervention.2023; 12(3): 105.     CrossRef
  • Multiple rectal neuroendocrine tumors: An analysis of 15 cases and literature review
    Shu Pang, Ye Zong, Kun Zhang, Haiying Zhao, Yongjun Wang, Junxiong Wang, Chuntao Liu, Yongdong Wu, Peng Li
    Frontiers in Oncology.2022;[Epub]     CrossRef
Müllerian Adenosarcoma Arising From Rectal Endometriosis
Chunseok Yang, Hoon Kyu Oh, Daedong Kim
Ann Coloproctol. 2014;30(5):232-236.   Published online October 28, 2014
DOI: https://doi.org/10.3393/ac.2014.30.5.232
  • 3,754 View
  • 38 Download
  • 10 Web of Science
  • 9 Citations
AbstractAbstract PDF

A Müllerian adenosarcoma is an extremely rare tumor characterized by a stromal component of usually low-grade malignancy and by a benign glandular epithelial component. A Müllerian adenosarcoma occurs mainly in the uterus, but also in extrauterine locations. Extrauterine Müllerian adenosarcomas are thought to arise from endometriotic deposits. A 36-year-old female presented to Daegu Catholic University Medical Center with a symptom of loose stool for several months. The imaging studies revealed a rectal mass, so she underwent a laparoscopic low anterior resection. Although extemporary pathology revealed an inflammatory myofibroblastic tumor, the final histologic diagnosis was a Müllerian adenosarcoma arising from rectal endometriosis. To our knowledge, except a concomitant rectal villotubular adenoma, cases of Müllerian adenosarcomas arising the rectal wall are rare. An adenosarcoma arising from endometriosis should be considered in the differential diagnosis of a pelvic mass, even one appearing in rectal wall, because ectopic endometrial tissue exists everywhere.

Citations

Citations to this article as recorded by  
  • Uterine Adenomyosarcoma Complicated by Uterine Prolapse and Necrosis: A Case Report
    Jiahao Chang, Yanqing Jin, Chaoxiong Cui, Haiyan Cheng
    International Medical Case Reports Journal.2025; Volume 18: 15.     CrossRef
  • The Many Faces of Endometriosis-Related Neoplasms in the Same Patient: A Brief Report
    Angela Santoro, Giuseppe Angelico, Frediano Inzani, Saveria Spadola, Damiano Arciuolo, Michele Valente, Vincenzo Fiorentino, Antonino Mulè, Giovanni Scambia, Gian Franco Zannoni
    Gynecologic and Obstetric Investigation.2020; 85(4): 371.     CrossRef
  • Two Cases of Extrauterine Müllerian Adenosarcoma Arising from Pelvic Endometriosis
    Zheng Yuan Ng, Yen Ching Yeo, Timothy Yong Kuei Lim, Ieera Madan Aggarwal
    Journal of Gynecologic Surgery.2019; 35(3): 194.     CrossRef
  • Deoxyribonucleic acid and chromatin imaging of endometriosis and endometrial carcinoma using atomic force microscopy
    Peter Urdzík, Miroslava Rabajdová, Peter Urban, Rastislav Dudič, Vladimír Komanický, Mária Mareková
    Spectroscopy Letters.2019; 52(9): 510.     CrossRef
  • Diagnostic challenges: low-grade adenosarcoma on deep endometriosis
    Jose Carlos Vilches Jimenez, Emilia Villegas Muñoz, Iván González Poveda, David Santos Lorente, Belinda Sanchez Pérez, Jesús S. Jimenez Lopez
    BMC Women's Health.2019;[Epub]     CrossRef
  • Genetic links between endometriosis and cancers in women
    Salma Begum Bhyan, Li Zhao, YongKiat Wee, Yining Liu, Min Zhao
    PeerJ.2019; 7: e8135.     CrossRef
  • Imaging Description of Extragenital Müllerian Adenosarcoma: A Case Report
    Annalisa Mone, Piergiorgio Iannone
    Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics.2019; 41(02): 124.     CrossRef
  • Primary extra-uterine and extra-ovarian mullerian adenosarcoma: case report and literature review
    Vincenzo Dario Mandato, Federica Torricelli, Valentina Mastrofilippo, Riccardo Valli, Lorenzo Aguzzoli, Giovanni Battista La Sala
    BMC Cancer.2018;[Epub]     CrossRef
  • Uterine Adenosarcoma: a Review
    Michael J. Nathenson, Vinod Ravi, Nicole Fleming, Wei-Lien Wang, Anthony Conley
    Current Oncology Reports.2016;[Epub]     CrossRef
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