Foye, Patrick M Ganglion impar injection techniques for coccydynia (coccyx pain) and pelvic pain. [electronic resource] - Anesthesiology May 2007 - 1062-3; author reply 1063 p. digital Publication Type: Letter; Comment ISSN: 0003-3022 Standard No.: 10.1097/01.anes.0000265174.90619.80 doi Subjects--Topical Terms: Coccyx--physiopathologyFemaleGanglia, Sympathetic--diagnostic imagingHumansInjectionsNeoplasm Recurrence, Local--physiopathologyPain, Intractable--surgeryPelvic Pain--surgeryTomography, X-Ray ComputedVulvar Neoplasms--physiopathology