title: [The value of soft tissue neurogenic tumors in the extremities with 3.0 T magnetic resonance imaging].
abstract: OBJECTIVE
  To explore the diagnostic value of 3.0T MRI in neurogenic tumor of soft tissue in the extremities.
  
  
  METHODS
  The MRI appearance of 17 neurogenic tumors with pathological confirmation was retrospectively analyzed. Various imaging characteristics of tumors were evaluated and different imaging findings were compared. The diagnosis value of each MRI features was evaluated with receiver-operating-characteristics (ROC) analysis.
  
  
  RESULTS
  In the benign tumors significant differences between neurilemmoma and neurofibromas were noted for the position (P = 0.044). Heterogenicity on T(2)-weighted fat suppression images was also significant in differentiating between neurilemmoma and neurofibromas ( P = 0.020) . The shape of tumors, maximum length of tumor short diameter, edem around masses, relationship with adjoining fascia had the best discriminatory ability. The ROC analysis yield the area under curve (AUC) of them was 0.967 (P = 0.037), 0.923 (P = 0.048) , 0.981 (P = 0.034) , 0.981 (P = 0.034), respectively.
  
  
  CONCLUSIONS
  If the neurogenic tumors of soft tissue in the extremities had one or several features of these characteristics (irregular margin, big volume, edem around masses, aggressive behavior with adjoining fascia) on 3.0T MRI, they had more possibility to be malignant. T(2)-weighted fat suppression series on 3.0TMRI was very important for discrimination of tumor histological characteristics.
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Guo
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China. Email:zhanghuibo1972@aliyun.com.
authors.forename: Huibo
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China.
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Department of Radiology, Beijing Chaoyang Hospital Affiliated to Capital University of Medical Sciences, Beijing 100020, China.
authors.forename: Renyou
authors.initials: R
authors.lastname: Zhai
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010524:Peripheral Nervous System Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012189:Retrospective Studies; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000556:secondary; D055815:Young Adult