Four patients with the double pylorus are reported. In view of an earlier history of peptic ulcer disease, the double pylorus is considered to have been acquired in all four. The literature involving 54 reported cases is reviewed, and the natural history of the double pylorus is discussed.
Anselm, Klaus and Halprin, Arthur H.
"The Acquired Double Pylorus,"
Henry Ford Hospital Medical Journal
: Vol. 31
Available at: https://scholarlycommons.henryford.com/hfhmedjournal/vol31/iss1/3