Endosonography of a submucosal tumor-like gastric lesion caused by fibrotic ulcer healing.

A 61-year-old woman with a gastric antral ulcer scar had a lesion that showed a submucosal tumor-like appearance on endosonography, which proved at resection to represent dense submucosal fibrous tissue. The reason for this marked reaction has not yet been established. Although we felt that the endosonographic pattern most likely showed submucosal fibrosis, in view of her past medical history, malignant lymphoma or aberrant pancreas could not be ruled out with certainty.