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 curved with an anterior concavity and convex posteriorly. The sacrum consists of five fused sacral vertebral and costal segments (numbered one-to-five) that form a central sacral body and paired sacral ala, which arise laterally from S1. Superiorly, the anterior lip of the S1 is called the sacral promontory.t is curved with an anterior concavity and convex posteriorly. The sacrum consists of five fused sacral vertebral and costal segments (numbered one-to-five) that form a central sacral body and paired sacral ala, which arise laterally from S1. Superiorly, the anterior lip of the S1 is called the sacral promontory.