Zuffa M, Rusnák F, Dorociaková E
Interné oddelenie NsP Liptovský Mikulás.
Vnitr Lek. 1994 Mar;40(3):192-3.
The authors describe a 50-year-old man who was hospitalized on account of one-week increasing epigastric pain with marked regression several hours after admission. The revealed small subcutaneous emphysema near the umbilicus directed the diagnostic procedure and led to detection of a covered perforation of a peptic prepyloric ulcer.