Lipomas in the sacroiliac area are a frequent cause of pain in the lower back and lower extremity. They are seldom considered in the differential diagnosis of back pain. We are unable to find references of the condition in the American literature since 1950. Several more recent reports are found in the foreign literature.
Voigt7 reported 153 cases of sacral pain, 72 belonging to the lipomatous category. Ages of these patients varied from 17 to 75 and in this series 57 were females. Sicard and Lord6 also emphasize that these nodules are responsible for certain lumbosacralgias and that they frequently produce sciatic radiation of pain. In 1944, Copeman and Ackerman1 published a very complete anatomical report of their observation in a large series of these tumors studied since 1937.
Most authors agree that the location of pain is often ill-defined and variable in degree, and that it