Neurolytic block of ganglion of Walther for the management of chronic pelvic pain

Here we report on the use of neurolytic block of ganglion impar (ganglion of Walther) for the management of intractable chronic pelvic pain, which is common enough to be recognized as a problem by gynecologists, likely to be difficult to diagnose and even more challenging to manage. Following failure in controlling the symptoms with pharmacological management, nine women underwent neurolysis of the ganglion impar in our Pain Clinic from 2009 to March 2013. The indication for the procedure was chronic pelvic pain (CPP) of either malignancy-related (4) or other origin (5). The Numeric Rating Scale (NRS) and duration of pain relief were employed to assess effectiveness of the procedure. Neurolysis was efficacious in patients with both malignancy-related CPP and CPP of non-malignant origin. Reported relief time varied from 4 weeks to 3 years, while in 4 cases complete and permanent cessation of pain was achieved. No complications were noted.