title: Incidental findings in pelvic lymph nodes at radical prostatectomy.
abstract: OBJECTIVE
  To assess the frequency and cause of incidental (non-metastatic) lymph node pathology discovered before or at radical prostatectomy.
  
  
  METHODS
  Eight hundred and fifty four consecutive lymphadenectomies received between 1988 and 2001 were reviewed. All had been processed and stained routinely. Additional techniques, indicated by morphology, were then performed.
  
  
  RESULTS
  Incidental pathology was found in 15 cases: florid sinus histiocytosis following prosthetic joint replacement (eight), non-caseating granulomas (three), small lymphocytic cell lymphoma (two), follicular lymphoma (one), and foreign body reaction (one). Incidental pathology was present in 1.8% of 854 patients who underwent pelvic lymphadenectomy during radical prostatectomy.
  
  
  CONCLUSIONS
  Awareness of possible non-metastatic lymph node pathology aids histological diagnosis and may be clinically relevant.
authors.affiliation: Department of Histopathology, North Midllesex Hospital, UCL Hospitals NHS Trust, London WC1E 6JJ, UK.aliwinstanley@doctors.org.uk
authors.forename: A M
authors.initials: AM
authors.lastname: Winstanley
authors.forename: A
authors.initials: A
authors.lastname: Sandison
authors.forename: S R J
authors.initials: SR
authors.lastname: Bott
authors.forename: A
authors.initials: A
authors.lastname: Dogan
authors.forename: M C
authors.initials: MC
authors.lastname: Parkinson
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D015618:Histiocytosis, Sinus / Q000175:diagnosis; D006801:Humans; D007595:Joint Prosthesis; D008197:Lymph Node Excision; D008206:Lymphatic Diseases / Q000150:complications* / Q000175:diagnosis; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D010388:Pelvis; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery