抄録
Benign esophageal tumor is less frequent than carcinoma. We present a case of a pedunculated esophageal cyst found in a 70-year-old man. Endoscopic examination revealed a pedunculated polyp about 3cm long and 2cm in diameter covered by normal esophageal mucosa at 2cm from the esophageal introitus. The preoperative diagnosis was a fibrovascular polyp or a true pedunculated neoplasma. The polyp was surgically excised by cervical esophagotomy and diagnosed as a retention cyst of the esophageal gland. Among the benign tumor of the esophagus, leiomyoma is the most frequent, followed by polyp, cyst, fibroma, hemangioma etc. “Polyp” is originally not a histological, but a morphological term. In this regard, there has been great confusion in the histopathological classification of benign esophageal tumors. When tumors do not show real neoplastic character, we propose to call these tumors polyps, using an adjective to further specific type, for example, fibrolipomatous polyp. Esophageal cyst is rare, and its incidence is approximately 5% of all esophageal tumors. As endoscopic techniques develop, we have more chance to find small tumors. Cysts originate from the lower esophagus and do not increase more than 2cm in diameter generally. Endoscopic excision is recommended when their size is small, and esophagotomy is selected when their diameter is greater than 4cm.
