title: Evaluation of routine application of P504S, 34betaE12 and p63 immunostaining on 250 prostate needle biopsy specimens.
abstract: BACKGROUND
  We aimed to determine whether a standard P504S, 34betaE12 and p63 immunostaining of prostate core needle biopsy specimens can optimize diagnostic accuracy of conventional staining methods.
  
  
  METHODS
  The staining properties of all three antibodies were evaluated on 250 prostate biopsies formerly diagnosed as benign.
  
  
  RESULTS
  Lack of basal cell staining in more than three glands for 34betaE12 and p63 occurred in 41 (27.5%) and 9 (6%) respective cases from the General Hospital pool. Respective figures from the Uropathology department specimens were 18 (18%) for 34betaE12 and 8 (8%) for p63. With the aid of P504S positivity, a case of prostate cancer as well as another of atypical small acinar proliferation was discovered.
  
  
  CONCLUSIONS
  Despite its potential for important aid in accurate diagnosis, standard application of immunohistochemistry in prostate biopsy is not justified and should be reserved for equivocal cases where conventional pathology fails to be conclusive.
authors: Pathology Department, "ATTIKON" University Hospital, University of Athens Medical School, 1 Rimini St, 12462, Athens, Greece.
authors: Kitty
authors: K
authors: Pavlakis
authors: Konstantinos
authors: K
authors: Stravodimos
authors: Theodoros
authors: T
authors: Kapetanakis
authors: Alkiviadis
authors: A
authors: Gregorakis
authors: Sofia
authors: S
authors: Athanassiadou
authors: Olympia
authors: O
authors: Tzaida
authors: Constantinos
authors: C
authors: Constantinides
mesh_terms: D000368:Aged; D001707:Biopsy, Needle; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis*; D008297:Male; D008565:Membrane Proteins / Q000032:analysis*; D008875:Middle Aged; D011467:Prostate / Q000737:chemistry* / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000737:chemistry* / Q000473:pathology*; D019998:Racemases and Epimerases / Q000032:analysis*; D012189:Retrospective Studies; D013194:Staining and Labeling
chemical_list: C121278:CK-34 beta E12; C081876:CKAP4 protein, human; D008565:Membrane Proteins; D007633:Keratins; D019998:Racemases and Epimerases; C108352:alpha-methylacyl-CoA racemase