This is a short length of small intestine showing a shallow ulcer with fairly sharply defined edges
and with an irregular outline which runs predominantly transversely. The small intestine is
deformed in a hour-glass fashion at this point. There is some scarring apparent in the submucosa
but the serosa appears intact.
This woman presented at the age of 51 with subacute intestinal obstruction; the patient
had been treated with hydrochlorthiazide and potassium chloride. It is assumed that the irritant
effects of a potassium chloride tablet were responsible for the lesion.