To fill this knowledge gap, Dr. Lukens and colleagues looked at the diagnostic yield and complication rates in 62 patients with surgically altered bowel anatomy who underwent DBE at Mayo Clinic in Florida between 2006 and 2011: 1  Eleven of the procedures were DBE-ERCPs.
The lateral masses are paired blocks of bone located lateral to the sacral foramina. The sacral ala is the wing-shaped bone found lateral to the S1 vertebral body. Histologic study of the sacral alae demonstrates decreased trabecular density (âalar voidsâ) within each of these structures (3).
It is slightly concave from side to side, and convex from the back and gives attachment to a few of the fibers of the iliacus. The posterior quarter of the ala represents the transverse process, and its anterior three-quarters the costal process of the first sacral segment.It serves as part of the border of the pelvic brim.The alae also form the base of the lumbosacral triangle.he posterior quarter of the ala represents the transverse process, and its anterior three-quarters the costal process of the first sacral segment. It serves as part of the border of the pelvic brim. The alae also form the base of the lumbosacral triangle.