title: [The clinical value of PSA and ECT in diagnosis of prostate cancer bone metastasis].
abstract: OBJECTIVE
  To evaluate the clinical significance of PSA and ECT bone scans in the diagnosis of bone metastasis in prostate cancer patients.
  
  
  METHODS
  Sixty-seven cases of prostate cancer were reviewed, bone metastasis (BM) occurred in 44 cases, and 23 cases without BM (NBM). The relation between PSA, ECT and bone metastasis was analyzed.
  
  
  RESULTS
  The sensitivity of BM with bone scan of ECT was 91.67%. Single local density of radionuclide with bone scan was found in 6 cases, only 2 cases have BM. The value of PSA between BM and Non-BM group had significant difference (87.28 micrograms/L vs 25.37 micrograms/L, P < 0.01). PSA and the degree of bone metastasis was positively correlated. PSA < 10 micrograms/L, the morbidity of BM was 0; PSA 10-20 micrograms/L, 7.69%; PSA 20-60 micrograms/L, 53.33%; PSA 60-100 micrograms/L, 91.67%; and PSA > 100 micrograms/L, 100%.
  
  
  CONCLUSIONS
  ECT is a high sensitive method in diagnosis of bone metastasis of prostate cancer, but it is not specific in patients with single focus of BM. As for those patients of prostate cancer without any treatment, while PSA < 10 micrograms/L, the morbidity of BM is rare; while PSA > 100 micrograms/L, BM is in high suspect.
authors.affiliation: Department of Urology, Nanjing General Hospital of Nanjing Command, PLA, Nanjing, Jiangsu 210002, China.
authors.forename: Hong-Qing
authors.initials: HQ
authors.lastname: Ma
authors.forename: Jing-Ping
authors.initials: JP
authors.lastname: Ge
authors.forename: Wu
authors.initials: W
authors.lastname: Wei
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Gao
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D006801:Humans; D008297:Male; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014055:Tomography, Emission-Computed
chemical_list: D017430:Prostate-Specific Antigen