title: A rare invasive hemangioma in cauda equina.
abstract: Typical hemangioma of cauda equina with relative clear margin has been described in some case reports, but atypical hemangioma with invasion, infiltration, and augmentation of all nerve roots in the cauda equina area has never been reported. In this paper, we reported a rare case with invasive hemangioma in cauda equina, and analyzed its radiological appearance and treatment.
  
  
  
  We described an atypical case of hemangioma, which was revealed by MR and intraoperative photograph without clear margin and confirmed by histopathologic diagnosis.
  
  
  
  The patient was received radiotherapy (5400 cGy/25f/5w) and continued to be clinically in good condition with follow-up MR after 24 months without further surgery.
  
  
  
  Surgery may be the first management modality for hemangiomas with severe or progressive neurologic deficits, and radiotherapy may be an alternative therapy to treat hemangiomas according to accurate histopathologic diagnosis.
authors.affiliation: Department of Spine Surgery, The Affiliated Hospital of Qingdao University, 59# Haier Road, Qingdao, 266000, China.
authors.forename: Hongfei
authors.initials: H
authors.lastname: Xiang
authors.affiliation: Department of Rehabilitation, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China.
authors.forename: Nana
authors.initials: N
authors.lastname: Shen
authors.affiliation: Department of Spine Surgery, The Affiliated Hospital of Qingdao University, 59# Haier Road, Qingdao, 266000, China. bhchen@hotmail.com.
authors.forename: Bohua
authors.initials: B
authors.lastname: Chen
authors.affiliation: Department of Spine Surgery, The Affiliated Hospital of Qingdao University, 59# Haier Road, Qingdao, 266000, China. ma_xuexiao@126.com.
authors.forename: Xuexiao
authors.initials: X
authors.lastname: Ma
authors.affiliation: Blood Center of Wisconsin, 8733 Watertown Plank Road, Wauwatosa, WI, 53226, USA.
authors.forename: Gang
authors.initials: G
authors.lastname: Xin
mesh_terms: D002420:Cauda Equina / Q000000981:diagnostic imaging*; D005500:Follow-Up Studies; D006391:Hemangioma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D010524:Peripheral Nervous System Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D018714:Radiotherapy, Adjuvant
keywords: Cauda equina; Hemangioma; Radiotherapy