Impar ganglion is a solitary ganglion located
retroperitoneally at the end of paravertebral sympathetic
chain and usually in front of sacrococcygeal joint. Solitary
or metastatic tumour in the surrounding tissues causes
poorly localized pain. This case report presents a 75-year
old male patient with colon cancer, whose severe pain
during defecation could not be controlled with
conventional high-dose opioid application but with
transcoccygeal radiofrequency thermocoagulation.
Radiofrequency thermocoagulation is promising not only
for chronic pelvic pain control but also in pelvic pain
secondary to malignancy particularly when the ganglion
is localized by radiologic imaging techniques.
Cancer, Electrocoagulation, Ganglion,
Sympathetic, Therapy: pain management,