[Assessment of nucleolar organizer regions (Ag-NORs) in primary lung cancer--correlation between Ag-NORs and tumor doubling time].
A total of 86 resected cases with primary lung cancer were examined on relationships between argyrophil nucleolar organizer regions (Ag-NORs) and other prognostic factors and correlation between Ag-NORs and tumor doubling time (DT). Survival rates were compared between patients with low Ag-NOR counts and patients with high Ag-NOR counts. 1) After logarithmic conversion of mean Ag-NOR counts in lung cancer, a small skewness (0.00486) and a small kurtosis (-0.7859) showed a normal distribution. Mean Ag-NOR counts was found to have a log-normal distribution. 2) There was a significantly inverse correlation between mean Ag-NOR counts and DT (correlation coefficient -0.705, p < 0.001). By plotting log (DT) on X axis and log (Ag-NORs) on Y axis, a formula representing a linear correlation was obtained: Y = 1.17-0.312 X, correlation coefficient -0.886. 3) The five-year survival rate (35%) of 46 patients with mean Ag-NOR counts which were more than or equal to 3.0 significantly lower than that (74%) of 40 patients with mean Ag-NOR counts of less than 3.0.
Department of Thoracic Surgery, Tohoku University, Sendai, Japan.
K
K
Usuda
Y
Y
Saito
H
H
Aikawa
A
A
Sakurada
C
C
Endo
S
S
Takahashi
K
K
Kanma
M
M
Sato
M
M
Sagawa
S
S
Fujimura
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002455:Cell Division; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D009697:Nucleolus Organizer Region / Q000473:pathology*; D011379:Prognosis; D016622:Silver Staining