Batson’s plexus

(redirected from Batson plexus)

Batson’s plexus

A network of veins which connect the internal vertebral venous plexi with the deep pelvic veins (which drain the base of the urinary bladder and prostate) and the thoracic veins (which drain the breast). Due to its location and lack of valves, Batson’s plexus is regarded as a conduit for metastases from cancers of the rectum and prostate to the vertebral column or brain, as well as for infection. It was named after Oscar Vivian Batson, who first described it in 1940.
References in periodicals archive ?
Since the veins are valveless, the Batson plexus is thought to allow migration of tumor cells into the vertebral plexus when the intra-abdominal pressure is increased, even in physiologic situations such as moving from the supine to the sitting and standing positions.
The absence of clinically detectable metastases in the classic landing sites for rectal carcinoma strongly suggests that spread to the pelvis, lumbar vertebrae, and beyond occurred via the Batson plexus to the vertebral venous plexus.
It is unclear if the Batson plexus plays a role in generating these micrometastases.