Ca prostate commonly metastasises to the veebrae:
Because valveless communication exist with Batson's periprostatic plexus.
Via drainage to Sacral lymph node
Of direct Spread
None of the above
Prostate cancer homing to the lumbar spine mediated by the connection of the Batson's periprostatic venous vessel to the veebral venous plexus. Ref: The Biology of Skeletal Metastases: Volume 118, 2004, Page 292; bailey and Love's Sho Practice of Surgery, 23rd Edition, Page 1250; Clinical Surgery By S. Das, Page 196.