Sacral cysts and perineal pain.
D003560:Cysts / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008161:Lumbosacral Region; D008279:Magnetic Resonance Imaging; D010146:Pain / Q000209:etiology*; D010502:Perineum; D013346:Subarachnoid Space; D014057:Tomography, X-Ray Computed