Intramural esophageal bronchogenic cyst is very rare. Surgical removal of the cysts is advised even the patients are asymptomatic, since the cyst can lead to complications, and there is a risk of malignant transformation. Thoracotomy or thoracoscopy is the most commonly used approach for complete excision of the cysts. To our knowledge, this is the first report to excise intramural esophageal bronchogenic cyst completely by endoscopic submucosal tunnel dissection (ESTD). A 40-year-old male was referred to our hospital due to the detection of a submucosal tumor at the distal esophagus. The tumor was found during gastroendoscopy in a general health check-up. The patient had no symptoms. A benign esophageal tumor was confirmed by endoscopic ultrasonography (EUS) and computed tomography (CT). On the basis of these results, ESTD was performed. During the procedure, a cystic mass was observed between the mucosa and the muscular layers of the esophagus, and a hybrid knife was used for dissection. Histopathological examination showed the cyst wall was lined by pseudostratified ciliated columnar epithelium, consistent with a bronchogenic cyst. The esophagography using meglumine diatrizoate showed no leakage on the seventh day after ESTD. The patient remained asymptomatic and had a regular diet during the follow-up period. We successfully utilized ESTD for complete removal of esophageal bronchogenic cysts originating from the muscularis propria. The approach appeared safe, providing a minimally invasive treatment option for patients.

中文翻译：

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内镜黏膜下隧道清扫术完全切除食管支气管囊肿：1例

壁内食管支气管囊肿非常罕见。即使是无症状的患者，也建议手术清除囊肿，因为囊肿可导致并发症，并有恶变的危险。开胸或胸腔镜检查是完全切除囊肿的最常用方法。据我们所知，这是首次通过内镜下黏膜下隧道剥离术（ESTD）完全切除壁内食管支气管囊肿的报道。一名40岁男性因在食管远端发现粘膜下肿瘤而被转诊到我们医院。在胃内窥镜检查期间在一般健康检查中发现了该肿瘤。病人没有任何症状。内镜超声检查（EUS）和计算机断层扫描（CT）证实了良性食道肿瘤。基于这些结果，进行了ESTD。在此过程中，在食管的粘膜和肌肉层之间观察到囊性肿块，并使用混合刀进行解剖。组织病理学检查显示，囊肿壁衬有假复层纤毛的柱状上皮，与支气管囊肿一致。在使用ESTD后的第七天，使用泛影酸葡甲胺的食管造影显示没有渗漏。该患者保持无症状，并在随访期间定期饮食。我们成功地利用ESTD完全去除了源自固有肌层的食道支气管囊肿。该方法看来是安全的，为患者提供了微创治疗方案。组织病理学检查显示，囊壁由假复层有纤毛的柱状上皮衬着，与支气管囊肿一致。在使用ESTD后的第七天，使用泛影酸葡甲胺的食管造影显示没有渗漏。该患者保持无症状，并在随访期间定期饮食。我们成功地利用ESTD完全去除了源自固有肌层的食道支气管囊肿。该方法看来是安全的，为患者提供了微创治疗方案。组织病理学检查显示，囊肿壁衬有假复层纤毛的柱状上皮，与支气管囊肿一致。在使用ESTD后的第七天，使用泛影酸葡甲胺的食管造影显示没有渗漏。该患者保持无症状，并在随访期间定期饮食。我们成功地利用ESTD完全去除了源自固有肌层的食道支气管囊肿。该方法看来是安全的，为患者提供了微创治疗方案。我们成功地利用ESTD完全去除了源自固有肌层的食道支气管囊肿。该方法看来是安全的，为患者提供了微创治疗方案。我们成功地利用ESTD完全去除了源自固有肌层的食道支气管囊肿。该方法看来是安全的，为患者提供了微创治疗方案。