Endoscopic submucosal dissection and postoperative radiotherapy for the treatment of esophagus adenoid cystic carcinoma.

Adenoid cystic carcinoma (ACC) is a malignant tumor primarily originating from the salivary glands, with the parotid and submandibular glands being the most common sites, but is rare in the esophagus. The ESD resection of esophagus adenoid cystic carcinoma has been reported in recent years. However, no additional postoperative treatment has been performed. We reported a rare case of a patient with esophageal adenoid cystic carcinoma who underwent ESD resection and postoperative radiotherapy. During the 1-year follow-up period, no recurrence or metastasis of the disease was observed.