Neurofibrosarcoma; a rare presacral tumor.
D005354:Fibrosarcoma; D006801:Humans; D009369:Neoplasms; D018317:Nerve Sheath Neoplasms; D018319:Neurofibrosarcoma; D012445:Sacrococcygeal Region
FIBROSARCOMA; SACROCOCCYGEAL REGION/neoplasms