It appears that one third of patients with idiopathic and diabetic gastroparesis have absent cells of Cajal on full-thickness gastric biopsies, and that these patients have increased abnormalities ...

Biopsies were collected from the antrum, duodenum, proximal and mid-jejunum (mean depth 167 cm) and, separately, from the right, transverse and left colon, and rectum and were histologically normal.