Publications by authors named "Yudai Kawamura"

Objective/aim: We aimed to demonstrate the anatomical relationship between the recurrent laryngeal nerves (RLNs), thin membranous dense connective tissue (TMDCT [e.g., the visceral or vascular sheaths around the esophagus]), and the lymph nodes around the esophagus at the curving portion of the RLNs for rational and efficient lymph node dissection.

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A 72‒year‒old man visited our hospital with a chief complaint of epigastralgia. Upper gastrointestinal endoscopy revealed type 3 advanced gastric cancer at the body of the stomach. Following an investigation, he was diagnosed with human epidermal growth factor receptor 2‒positive gastric cancer with invasion to the pancreas as well as the paraaortic lymph node, and multiple liver metastases were also observed.

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Objective: We previously reported on the thin membranous dense connective tissue around the esophagus in the upper mediastinum. This time, we histologically investigated the existence of similar structures in the middle and lower mediastinum, caudal to the bifurcation of the trachea.

Methods: Semi-sequential transverse sections of the mediastinum were obtained from two cadavers.

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Background: Locoregional steroid injection prevents post-endoscopic submucosal dissection (ESD) esophageal stricture, but histological changes that occur following steroid injection in the human esophagus are unclear. This study investigated the histopathological characteristics caused by locoregional triamcinolone acetonide (TA) injection using human esophagectomy specimens.

Methods: From January 2014 to December 2019, among 297 patients (373 lesions) who underwent esophageal ESD, 13 patients who underwent additional esophagectomy after ESD were examined.

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Background/aim: Self-expandable metal stent (SEMS) as a bridge to surgery (BTS) for obstructive colorectal cancer (CRC) raises concerns regarding the short-term as well as oncological outcome. The present study aimed to investigate the safety of SEMS placement and risk factors of worse short-term and oncological outcomes as BTS.

Patients And Methods: Twenty-four patients with obstructive CRC who underwent SEMS placement as BTS were included.

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A 50-year-old woman had noted a mass in her right breast 2 years ago but did not consult a hospital. She consulted our hospital because the mass increased in size and also reddened. The tumor measured 10 cm in diameter and was palpable in the whole right breast.

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Purpose: A prospective trial evaluated the feasibility and safety of "mediastinoscopic esophagectomy with lymph node dissection" (MELD).

Methods: Eligible patients had thoracic esophageal squamous cell carcinoma, excluding T4, a bulky primary lesion or distant metastasis. Ten patients were enrolled and treated between September 2015 and March 2018.

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Background: The structure of the fascia in upper mediastinum has already been reported from gross anatomical viewpoints by Sarrazin. But it is necessary to understand meticulous anatomy for thoracoscopic or mediastinoscopic surgery. So herein, we investigate histologically the thin membranous structure made of dense connective tissues.

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