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Esophageal Neuroendocrine Carcinoma, Report of a Case Akiko Takahashi 1 , Tsuneo Oyama 1 , Yoshinori Miyata 2 , Satoshi Shiozawa 3 1Department of Endoscopy, Saku Central Hospital Advanced Center, Saku, Japan 2Department of Oncology, Saku Central Hospital Advanced Center, Saku, Japan 3Department of Pathology, Saku Central Hospital Advanced Center, Saku, Japan Keyword: 食道神経内分泌腫瘍 , NET , 食道神経内分泌癌 , NEC , 食道SMT様隆起 pp.374-381
Published Date 2024/3/25
DOI https://doi.org/10.11477/mf.1403203499

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  • Abstract
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 A 60-year-old man was referred for detailed examination of esophageal SMT(submucosal tumor). A soft esophageal SMT was observed in the middle of the thoracic esophagus. It was approximately 10mm in size and appeared reddish. Endoscopic ultrasonography revealed a hyperechoic mass lesion in the submucosal layer. Based on the biopsy results of the material from the top of the SMT, the patient was diagnosed with NEC(neuroendocrine carcinoma). No lymph node metastases were observed in the CT(computed tomography)scan, and the lesion was diagnosed as NEC, T1b, N0, M0, stage I. ESD(endoscopic submucosal dissection)was performed based on the patient's wishes, and NBIME performed just before the ESD revealed avascular regions in the oral side of the SMT, indicating expansive tumor growth in the proper mucosal layer. The final diagnosis was NEC, T1b-SM2(2,000μm), ly1(D2-40), v0, HM0, VM0, 0-I type, 10×10mm. CT performed following ESD revealed lymph node swelling(No 106 recR) ; therefore, the NEC was diagnosed as T1b, N1, M0, stage II. As an additional therapy, chemoradiotherapy with etoposide and cisplatin and a total radiation dose of 60 Gy was initiated. Seven years following the ESD, the patient is alive without recurrence or metastasis. According to the comprehensive registry of the Japanese Esophageal Association, NEC accounts for only 0.6% of all esophageal neoplastic lesions. Therefore, this is a critical case of the typical and magnified endoscopic findings of superficial esophageal NEC.


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