<prompt> Ca prostate commonly metastasises to the veebrae:Because valveless communication exist with Batsons periprostatic plexus.Via drainage to Sacral lymph nodeOf direct SpreadNone of the above  <response>: Prostate cancer homing to the lumbar spine mediated by the connection of the Batsons periprostatic venous vessel to the veebral venous plexus. Ref: The Biology of Skeletal Metastases: Volume 118, 2004, Page 292; bailey and Loves Sho Practice of Surgery, 23rd Edition, Page 1250; Clinical Surgery By S. Das, Page 196. 