title: [Assessment of nucleolar organizer regions (Ag-NORs) in bronchial dysplasia and roentgenographically occult bronchogenic squamous cell carcinoma].
abstract: Mean argyrophil nucleolar organizer regions (Ag-NORs) per nucleus were determined on columnar epithelium, bronchial dysplasia, roentgenographically occult squamous cell carcinoma and squamous cell carcinoma with roentgenographically findings in 76 formalin-fixed, paraffin-embedded resected specimens. 1) Mean Ag-NOR counts per nucleus (mean +/- standard deviation) were 1.67 +/- 0.30 in 10 columnar epitheliums, 2.74 +/- 0.41 in 13 lesions with bronchial dysplasia, 3.75 +/- 0.59 in 57 lesions with roentgenographically occult squamous cell carcinoma and 4.44 +/- 0.51 in 14 lesions with squamous cell carcinoma with roentgenographically findings. There were significant differences between each two groups. 2) In lesions with squamous call carcinoma, mean Ag-NOR counts per nucleus of T2, T3 or T4 tumor were significantly higher than those of T1 tumor. Mean Ag-NOR counts per nucleus of N1 or N2 tumor were significantly higher than those of N0 tumor.
authors.affiliation: Department of Surgery, Sendai Kousei Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Usuda
authors.forename: Y
authors.initials: Y
authors.lastname: Saito
authors.forename: G
authors.initials: G
authors.lastname: Okaniwa
authors.forename: T
authors.initials: T
authors.lastname: Sakuma
authors.forename: M
authors.initials: M
authors.lastname: Handa
authors.forename: A
authors.initials: A
authors.lastname: Sakurada
authors.forename: C
authors.initials: C
authors.lastname: Endo
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: N
authors.initials: N
authors.lastname: Nagamoto
authors.forename: S
authors.initials: S
authors.lastname: Fujimura
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001980:Bronchi / Q000473:pathology*; D002283:Carcinoma, Bronchogenic / Q000000981:diagnostic imaging / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009697:Nucleolus Organizer Region / Q000473:pathology*; D011859:Radiography; D016622:Silver Staining