Table 1 Distribution of patients according to causes of gastric outlet obstruction

Benign causes

82

44.6

  • Peptic ulcers

52

28.3

  • Hypertrophic pyloric stenosis

24

13.0

  • Gastric polyp

2

1.1

  • Caustic ingestion

2

1.1

  • Latrogenic

1

0.5

  • Gastric/duodenal tuberculosis

1

0.5

  • Prepyloric web

1

0.5

Malignant causes

102

55.4

  • Gastric cancer

79

42.9

  • Carcinoma pancreas

16

8.7

  • Periampullary Ca

3

1.6

  • Cholangiocarcinoma

3

1.6

  • Duodenal carcinoma

1

0.5