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rectal neuroendocrine tumor with uncommon metastatic spread:A case report and review of literature

World Journal of Gastrointestinal Oncology 2016年第2期8卷 231-234页

作者： Nikolaos Tsoukalas Michail Galanopoulos Maria Tolia Maria Kiakou Georgios Nakos Aristoula Papakostidi Georgios Koumakis department of medical oncology 401 general military hospital11525 AthensGreece second department of medical oncology "agios savvas"anticancer hospital11525 AthensGreece department of gastroenterology general hospital of athens"evaggelismos"10676 AthensGreece department of pathology 401 general military hospital11525 AthensGreece

neuroendocrine tumors of the gastrointestinal tract are rare neoplasms. rectal neuroendocrine tumors consist approximately the 5%-14% of all neuroendocrine neoplasms in Europe. These tumors are diagnosed in relatively young patients,with a mean age at diagnosis of 56 years. Distant metastases from rectal neuroendocrine tumors are not very common. Herein we describe a case of a rectal neuroendocrine tumor which metastasized to the lung,mediastinum and orbit. This case underscores the importance of early identification and optimal management to improve patient's prognosis. Therefore,the clinical significance of this case is the necessity of physicians' awareness and education regarding neuroendocrine tumors' diagnosis and management.

关键词： Rectum Uncommon metastatic spread neuroendocrine tumor rectal neuroendocrine tumor rectal neuroendocrine neoplasm

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Radical Operation and Everolimus Therapy for rectal neuroendocrine tumor with Liver Metastases: A Case Report with Review of the Literature

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Case Reports in Clinical Medicine 2020年第9期9卷 275-281页

作者： Jiaqi Xu Yujie Cui Xinfeng Huang Yongbo Meng Jian Xin Yong Cheng Burn and Plastic Surgery The Fifth Affiliated Hospital Sun Yat-sen University Zhuhai China Rheumatology The Fifth Affiliated Hospital Sun Yat-sen University Zhuhai China

neuroendocrine tumors (NETs) are often misdiagnosed because they can involve any part of the body and have non-specific symptoms. Here, we report a case of a 39-year-old man with rectal neuroendocrine tumor (RNET) and hepatic metastases treated with a combination of radical surgery and Everolimus therapy. The patient complained of abdominal distension, pain, and constipation of one month duration. Enhanced CT scan of the abdomen, colonoscopy and Biopsy findings confirmed the diagnosis of rectal neuroendocrine tumor. As the anatomical structures were clear and the masses seemed to be resectable, we decided to initiate treatment with radical operation and Everolimus therapy. The patient has responded well to the treatment with no evidence of recurrence after 4 years of follow-up. This case is interesting because of the rarity of this neoplasm and its initial misdiagnosis as a giant hepatic carcinoma (hepatoma). It also demonstrates that a combination of curative surgical resection and Everolimus is a good option in a patient with large colorectal neuroendocrine tumors and massive hepatic metastases.

关键词： rectal neuroendocrine tumor Liver Metastases Everolimus Radical Operation

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Is lymphatic invasion of microrectal neuroendocrine tumors an incidental event?:A case report

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World Journal of Clinical Cases 2023年第4期11卷 859-865页

作者： Jing-Xue Ran Liang-Bi Xu Wan-Wei Chen Hao-Yi Yang Yan Weng Yong-Mei Peng Clinical Medical School Guizhou Medical UniversityGuiyang 550000Guizhou ProvinceChina Endoscopy Center Affiliated Hospital of Guizhou Medical UniversityGuiyang 550000Guizhou ProvinceChina

BACKGROUND A rectal neuroendocrine tumor(rNET)is a malignant tumor originating from neuroendocrine ***,tumor size is the primary basis for assessing tumor *** SUMMARY This article reports the case of a 46-year-old male patient who underwent a colonoscopy that found a 3 mm rectal polypoid *** pathological examination of a sample collected with biopsy forceps revealed a neuroendocrine *** endoscopic submucosal dissection rescue therapy was *** presence of lymphatic vessels indicated that the tumor had infiltrated the negative resection *** lesion was located in the distal rectum near the anal ***,to ensure the patient’s quality of life,follow-up observation was conducted after full communication with the *** tumor recurrence or distant metastasis has been found during the 13-mo follow-up after *** Despite the presence of lymphatic invasion and extremely small diameter rNETs in our case,this phenomenon may not imply a higher risk of distant lymph node and organ metastasis.

关键词： rectal neuroendocrine tumor tumor size Lymphatic invasion Case report

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Risk factors of lymph node metastasis in rectal neuroendocrine tumors

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Oncology and Translational Medicine 2022年第4期8卷 186-190页

作者： Donghong Liang Zhennan Niu Xiaofang Sun Changjuan Meng Zhuang Liu Department of Endoscopy Xingtai Third HospitalXintai 054099China Department of Pathology Xingtai Third HospitalXintai 054099China

Objective The aim of this study was to investigate the risk factors of lymph node metastasis in rectal neuroendocrine neoplasms(RNENs).Methods We enrolled 168 patients with RNENs as the research object,and their clinicopathological and survival data were *** risk factors affecting lymph node metastasis were analyzed retrospectively,and independent risk factors affecting prognosis were *** Analysis showed that age,tumor diameter,tumor function,grade,and T stage were correlated with lymph node metastasis(Ptumor size,grade,and T stage were independent risk factors for lymph node metastasis in patients with ***-Meier analysis showed that the 5-year overall survival(OS)of patients with lymph node metastasis was 40.0%(10/25),and that of patients without lymph node metastasis was 93.0%(133/143).The prognosis of RNENs patients with lymph node metastasis along with patients with large tumor diameter and high grade was *** multivariate analysis showed that tumor diameter(HR=1.985,P=0.008),grade(HR=3.416,P=0.004),T stage(HR=2.413,P=0.014),and lymph node metastasis(HR=3.119,P=0.000)were independent risk factors affecting the prognosis of patients with *** tumor size,grade,and T stage are the main risk factors for lymph node metastasis and prognosis in patients with *** risk factors should be fully evaluated before surgery.

关键词： rectal neuroendocrine tumor lymph node metastasis risk factors

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