It had been long asked if the syndrome really exists causing abdominal pain (Szilagyi et al., 1972; Evans, 1974; Brandt & Boley, 1978; Croft et al., 1981 and Plate et al., 1981) although the beneficial effects of the surgical incision of the median arcuate ligament indicate a correlation between abdominal pain and the stenosis angiographically observed (Edhag et al., 1977 and Lawson & Ochsner).