Table 1
The clinical features of the cases of double pylorus in the reported Korean literatures

The clinical features		No. (%)
Age	<64	15 (65.2)
	≥65	8 (34.8)
Sex	Male	22 (95.7)
	Female	1 (4.3)
Medical history	None	16 (69.6)
	≥1*	7 (30.4)

Ulcer bleeding, hypothyroidism, chronic bronchitis and diabetes.