Table 1.

Benign causes of gastric outlet obstruction

Peptic ulcer disease

Caustic ingestion

Benign tumors

Adenoma

Lipoma

Stromal tumors

Carcinoid

Inflammatory causes

Acute pancreatitis

Chronic pancreatitis

Crohn's disease

Cholecystitis

Eosinophilic gastroenteritis

Inflammatory polyp

NSAID induced strictures/rings

Iatrogenic

Post surgical scarring or anastomotic stricture

Postvagotomy

Endoscopic mucosal resection

Other causes

Tuberculosis, CMV, Cryptosporidium,

Annular pancreas

Adult hypertrophic pyloric stenosis

Duplication cyst

Amyloidosis

Bouveret's syndrome

Bezoar

NSAID: Nonsteroidal anti-Inflammatory drug; CMV: Cytomegalovirus.