2024 Volume 66 Issue 1 Pages 29-35
A 58-year-old woman complained of dysphagia and underwent endoscopic examination that revealed a 12 mm protrusion in the upper thoracic esophagus. Histopathological examination of the biopsy specimens taken from the lesion led to a diagnosis of granular cell tumor. EUS showed that the tumor is located in the laminar propria mucosa and extended into the submucosal layer. In addition, there were multiple widespread pitting lesions on the esophageal mucosa that was diagnosed as intramural esophageal pseudodiverticulosis based on its characteristic endoscopic and radiographic findings, with constricted lower esophagus and poor expansion. Due to concerns over the presence or development of esophageal submucosal fibrosis, resection of the granular cell tumor was performed by ESD instead of EMR. Total en-bloc resection was achieved safely despite fibrosis of the submucosal layer being observed during the procedure. Herein, we report this very rare case of esophageal granular cell tumor complicated with esophageal intramural pseudodiverticulosis successfully resected by ESD.
