title: Significance of proliferative activity and DNA ploidy in pancreatic cancer and chronic pancreatitis.
abstract: BACKGROUND
  Precise preoperative assessment of diagnosis and prognosis in patients with pancreatic tumors would facilitate improvement of treatment strategies. In this context, we evaluated the significance of the proliferative index and of static DNA cytophotometry in the diagnosis and prognosis of pancreatic tumors.
  
  
  METHODS
  Consecutive surgical specimens from 26 patients with ductal pancreatic cancers and eight patients with chronic pancreatitis were investigated by: 1. Staging; 2. Conventional histological and cytological grading; 3. MIB-1 (Ki-67 labeling) proliferating index; and 4. Static DNA cytophotometry.
  
  
  RESULTS
  All patients with chronic pancreatitis had a normal MIB-1 labeling index and a euploid DNA content. In contrast, patients with pancreatic cancers rarely had a normal labeling index (1 of 26 patients) or a euploid DNA content (6 of 26 patients). Staging significantly correlated with survival time. However, it did not correlate with cytological criteria. Cytological criteria, such as conventional grading, MIB-1 proliferating index, and DNA ploidy, were not significantly correlated with survival time. Conventional grading was significantly correlated (p < 0.02) with proliferating index, but not with DNA ploidy.
  
  
  CONCLUSIONS
  Proliferating index and DNA ploidy are relevant cytological markers that can help to discriminate between chronic pancreatitis and pancreatic cancer. The prognostic significance of these markers in pancreatic cancer patients, however, seems to be less relevant than tumor stage and of limited relevance for the individual cancer patient.
authors.affiliation: Institute of Pathology, Martin-Luther-Universität Halle-Wittenberg, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Loertzer
authors.forename: R
authors.initials: R
authors.lastname: Hinze
authors.forename: J
authors.initials: J
authors.lastname: Knolle
authors.forename: F W
authors.initials: FW
authors.lastname: Rath
authors.forename: A
authors.initials: A
authors.lastname: Schmassmann
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor; D002908:Chronic Disease; D003592:Cytophotometry; D004273:DNA, Neoplasm / Q000235:genetics; D005260:Female; D006801:Humans; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D010183:Pancreatic Ducts; D010190:Pancreatic Neoplasms / Q000145:classification* / Q000175:diagnosis* / Q000235:genetics / Q000401:mortality; D010195:Pancreatitis / Q000175:diagnosis* / Q000235:genetics / Q000378:metabolism; D011003:Ploidies; D011379:Prognosis; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D012189:Retrospective Studies; D016019:Survival Analysis
chemical_list: D014408:Biomarkers, Tumor; D004273:DNA, Neoplasm; D019394:Ki-67 Antigen; D018809:Proliferating Cell Nuclear Antigen