Gastritis cystica profunda in a Western population without previous gastric surgery.

Gastritis cystica profunda (GCP) is a rare entity characterized by foveolar hyperplasia and cystic dilation of the gastric mucosa and submucosal glands. Its etiopathogenesis remains unknown. It has been associated with chronic inflammatory conditions, such as gastric surgery or bile reflux. The diagnosis is histological, although endoscopic ultrasound (EUS) may be useful for initial suspicion. We present a series of cases from our center, where six cases of GCP were collected between 2012 and 2022, with no history of gastric surgery. The most common locations were the antrum (50%), fundus (33%), and body (17%). Endoscopic findings included polyps ranging from 7 to 50 mm. The treatment was en bloc mucosectomy for lesions ≤20 mm and piecemeal mucosectomy for lesions >20 mm. Recurrence was observed in four patients (67%). Histologically, displaced gastric glands were found in the submucosa with cystic dilation, without dysplastic changes.