Radiofrequency ablation for cancer pain with inadequate opioid response.

Data on the use of radiofrequency (RT) to ablate a tumor mass-causing pain have not been reported. A male in his 50s, diagnosed with a pelvic relapse of rectal cancer, was admitted for pain from the left groin to the perineum. The principal findings of contrast-enhanced computed tomography (CT) revealed the presence in the pelvic area of large solid tissue infiltrating the internal obturator muscle and eroding the vertebral column of the acetabulum.