"origin: from the ipsilateral common iliac or iliolumbar veins"
"course: ascends vertically in the posterior abdominal wall, communicating with the lumbar veins as it crosses them. The ascending lumbar vein ascends posterior to the psoas major muscle and anterior to the lumbar transverse processes."
"tributaries and drainage: lumbar veins and internal vertebral plexus"
"course: ascends vertically in the posterior abdominal wall, communicating with the lumbar veins as it crosses them. The ascending lumbar vein ascends posterior to the psoas major muscle and anterior to the lumbar transverse processes."
Expected headings
"Summary"