195 round ulcers were examined once a month at least for the first three months. 152
healed keeping their original round shape (α course). 31 showed a short linear niche
meeting at right angles with the lesser curvature (β course). 9 ulcers splitted into
kissing ulcer (γ course) and 3 cases of a giant ulcer of the body of the stomach showed
a linear niche in parallel to the lesser curvature (δ course). Ulcers taking the β
or γ course are more apt to relapse. As far as the pathogenesis of the linear ulcer
is concerned there are three patterns of development. 15% of all round ulcers are
prone to heal in a linear fashion. In addition linear ulcers may be derived from the
confluence of multiple ulcers and finally, a giant ulcer may become gradually linear
as the mucous membrane around the ulcer covers its surface.
Gastroscopy - linear ulcer - round ulcer - healing process - Oi's rule
