Spontaneous Retroperitoneal Hematoma from Lumbar Vein.
Lumbar vein hemorrhage is rare, and lumbar vein hemorrhage leading to a retroperitoneal hematoma has previously been unreported.
Azygos vein is formed by the union of the ascending lumbar veins with the right subcostal veins at the level of the 12th thoracic vertebra, ascending in the posterior mediastinum, and arching over the right main bronchus at the root of the right lung to join the superior venacave.
The terminations of the right and left ascending lumbar veins when present are traced and studied in relation to the aortic opening and the crura of the diaphragm.
We are reporting two cases in which a lumbar vein
had an unusual course and termination on the left side and in one of these cases, was accompanied by a lumbar artery.
More over a dilated communicating vein between left renal and left ascending lumbar vein
has been described as a potential diagnostic pitfall on abdominal computed tomography (CT) because these may mimic para-aortic lymphadenopathy (1,2).
The lumbar segmental veins connect the ascending lumbar veins
to the inferior vena cava.
Rummel tourniquets were placed around the infrarenal IVC (below the palpable thrombus), two large lumbar veins
and the left renal vein.
Multiple Vascular Anomalies Involving Testicular, Suprarenal Arteries and Lumbar Veins
Ascending lumbar veins
on either side received lumbar and subcostal veins of their corresponding side and terminated in the azygos vein.