title: [Diagnostic value of 18F-fDG Pet/CT in the detection of the cervical lymph nodes metastasis].
abstract: OBJECTIVE
  To explore the diagnostic value of 18F-FDG PET/CT in the detection of the cervical lymph nodes metastasis.
  
  
  METHODS
  According to the pathological result, the data of neck PET, CT, PET/CT of 20 patients with head and neck tumors were analyzed retrospectively.
  
  
  RESULTS
  The sensitivity, specificity and accuracy of PET, CT and PET/CT in detection cervical lymph nodes metastasis were (92.3%, 85.7%, 90.0%), (77.0%, 57.1%, 70.0%), (92.3%, 100.0%, 95.0%) respectively, the accuracy of PET/CT was better than that of CT alone (P < 0.05) and a little better than that of PET alone. Among 13 cases after irradiation,the correct diagnose was found in seven cases by CT and in 12 cases by PET/CT. Four cases were found with cervical lymph node metastasis in the seven clinical N0 (cN0) patients after functional neck dissection (FND). The preoperative diagnose of PET/CT was completely consistent with the postoperative pathological result.
  
  
  CONCLUSIONS
  18F-FDG PET/CT is better than CT alone and PET alone for the detection of cervical lymph nodes metastasis, especially for the recurrent tumors. It may be served as the indication of neck dissection in the head and neck cancers.
authors.affiliation: Department of Otolaryngology, the Second Clinical Medical College, Jinan University, Shenzhen, 518020, China. kezhaoyang@tom.com
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Ke
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Yuanxian
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhigang
authors.initials: Z
authors.lastname: He
authors.forename: Yingnan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D019788:Fluorodeoxyglucose F18; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008198:Lymph Nodes / Q000000981:diagnostic imaging*; D008207:Lymphatic Metastasis / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D037981:Neck Dissection; D009367:Neoplasm Staging; D049268:Positron-Emission Tomography / Q000379:methods; D012189:Retrospective Studies; D012680:Sensitivity and Specificity
chemical_list: D019788:Fluorodeoxyglucose F18