title: Multidisciplinary Care of Unruptured Brain Arteriovenous Malformations to Improve Symptomatic Headache and the Onset, Progression, and Outcomes of Unruptured Brain Arteriovenous Malformations.
abstract: Symptomatic headaches attributed to unruptured brain arteriovenous malformations (ubAVMs) are very common and affect patients' quality life, but multidisciplinary care of ubAVMs to improve symptomatic headache remains unclear.
  
  
  
  The objective is to identify the features of symptomatic headaches, and to obtain headache outcomes following multidisciplinary care of ubAVMs, as well as provide background on the natural history of ubAVMs.
  
  
  
  The features of symptomatic headaches and headache outcomes were analyzed in a large cohort of cases after multidisciplinary care of ubAVMs. We have also provided information on the natural history of ubAVMs.
  
  
  
  This study was conducted at the Department of Neurosurgery of Zhujiang Hospital where 336 patients from 1998 to 2014 were reviewed by a multidiscipline team. Only 124 patients were eligible.
  
  
  
  The demographics, clinical features, imaging features, and headache details of eligible patients were reviewed. An 11-point pain scale score was used to assess symptomatic headaches before, during, and after treatment. The headache outcomes, death or stroke, and adverse functional outcomes (modified Rankin Scale score = 2, mRS = 2) were assessed following multidisciplinary care of ubAVMs.
  
  
  
  Twenty-three (56.1%) of 41 patients had migraine-like headaches located in occipital lobe (P < 0.001), while forty (63.5%) of 63 patients had tension-type-like headaches located in frontotemporal lobe (P < 0.001). For patients with tension-type-like or all types of headache, headache improvement differed between the multidisciplinary group and medical group (87.8% vs. 31.8%, P < 0.001; 85.7% vs. 40.7%, P < 0.001). The risk of death or stroke did not differ between multidisciplinary group and medical group (P = 0.393), whereas the risk of adverse functional outcome (mRS = 2) differed significantly by long-time follow-up (23.0% vs.10.0%, P = 0.022).
  
  
  
  This study provides the initial experience to support multidisciplinary care for ubAVMs to improve symptomatic headaches and patients' quality life, but based on the retrospective study with inherent limitations, larger samples and multi-center trials are needed on this interesting issue.
  
  
  
  Occipital ubAVM is more likely to present with migraine-like headache, while frontotemporal ubAVM tends to present with tension-type-like headache. The effectiveness of multidisciplinary care for ubAVM to improve headache has been shown, but the natural history of ubAVM patients with headache remains unclear.Key Words: Unruptured brain arteriovenous malformations, headache, headache improvement, natural history.
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Ling-Feng
authors.initials: LF
authors.lastname: Lai
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Jia-Xiang
authors.initials: JX
authors.lastname: Chen
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Kuang
authors.initials: K
authors.lastname: Zheng
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Xu-Ying
authors.initials: XY
authors.lastname: He
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Xi-Feng
authors.initials: XF
authors.lastname: Li
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Yin
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Qiu-Jing
authors.initials: QJ
authors.lastname: Wang
authors.affiliation: Department of Otolaryngology, The First People's Hospital of Foshan, China.
authors.forename: Tuan-Ming
authors.initials: TM
authors.lastname: Zou
authors.affiliation: The National Key Clinical Specialty. The Engineering Technology Research Center of Education. Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
authors.forename: Chuan-Zhi
authors.initials: CZ
authors.lastname: Duan
mesh_terms: D006261:Headache / Q000209:etiology / Q000628:therapy*; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000150:complications / Q000628:therapy*; D012189:Retrospective Studies; D016896:Treatment Outcome