title: Predictive role of hematologic parameters in testicular torsion.
abstract: OBJECTIVE
  To evaluate the predictive role of the neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), mean platelet volume (MPV), and platelet count (PLT) in the diagnosis of testicular torsion (TT) and testicular viability following TT.
  
  
  METHODS
  We analyzed two study groups in this retrospective study: 75 patients with a diagnosis of TT (group 1) and 56 age-matched healthy subjects (group 2). We performed a complete blood count as a part of the diagnostic procedure, and NLR, PLR, MPV, and PLT values were recorded. We compared the patient and control groups in terms of these parameters. Then, TT patients were divided into two subgroups according to the time elapsed since the onset of symptoms. Subsequently, we evaluated the relationship between the duration of symptoms and these parameters.
  
  
  RESULTS
  There were significant differences between groups 1 and 2 in NLR, PLR, and PLT (p<0.001 for all). There was no predictive role of MPV in the diagnosis of TT (p=0.328). We determined significantly high sensitivity and specificity levels for NLR in the prediction of TT diagnosis (84% and 92%, respectively). Furthermore, NLR was significantly related to the duration of symptoms in TT patients (p=0.01).
  
  
  CONCLUSIONS
  NLR may be a useful parameter in the diagnosis of TT. Furthermore, NLR may be used as a predictive factor for testicular viability following TT.
authors: Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey.
authors: Mustafa
authors: M
authors: Güneş
authors: Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey.
authors: Mehmet
authors: M
authors: Umul
authors: Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey.
authors: Muammer
authors: M
authors: Altok
authors: Department of Urology, Haydarpasa Training and Research Hospital, İstanbul, Turkey.
authors: Mehmet
authors: M
authors: Akyuz
authors: Department of Urology, Tepecik Training and Research Hospital, İzmir, Turkey.
authors: Cemal Selcuk
authors: CS
authors: İşoğlu
authors: Department of Urology, Fatih Sultan Mehmet Training and Research Hospital, İstanbul, Turkey.
authors: Fatih
authors: F
authors: Uruc
authors: Department of Urology, Dumlupınar University, Faculty of Medicine, Kütahya, Turkey.
authors: Bekir
authors: B
authors: Aras
authors: Department of Urology, Canakkale Onsekiz Mart University, Faculty of Medicine, Çanakkale, Turkey.
authors: Alpaslan
authors: A
authors: Akbaş
authors: Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey.
authors: Ercan
authors: E
authors: Baş
mesh_terms: D000293:Adolescent; D006801:Humans; D018655:Lymphocyte Count / Q000379:methods*; D008297:Male; D009504:Neutrophils / Q000473:pathology*; D010976:Platelet Count / Q000379:methods; D011237:Predictive Value of Tests; D011379:Prognosis; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D013086:Spermatic Cord Torsion / Q000097:blood / Q000175:diagnosis / Q000503:physiopathology; D063189:Symptom Assessment / Q000379:methods; D013737:Testis / Q000473:pathology / Q000503:physiopathology; D014022:Tissue Survival; D014421:Turkey
keywords: Lymphocyte; Mean platelet volume; Neutophils; Platelet count; Spermatic cord torsion