In a review of sixty-four (64) cases of gastric outlet obstruction (G.O.O.) seen at the University of Maiduguri Teaching Hospital between 1991 and 1996, cicatrising chronic duodenal ulcer accounted for 65.7% of cases, followed by antral carcinoma of the stomach 15%, congenital hypertrophic pyloric stenosis 9.4%, carcinoma of the head of pancreas 6% and congenital bands 3%. The usual presentations were forceful vomiting in a patient with background history of dyspepsia of varying duration depending on cause, visible persistalsis, weight loss, abdominal masses and electrolyte imbalances. Diagnoses was easy clinically and confirmed by barium studies and/or gastroduodenoscopy. Treatment offered depended on the cause of gastric outlet obstruction.