Clinical features and therapy of "typical" and "atypical" bronchial carcinoid tumors (grade 1 and grade 2 neuroendocrine carcinoma).
Between 1971 and 1992, 55 patients with grade 1 (G1) (n = 32) or grade 2 (G2) (n = 23) neuroendocrine bronchial carcinomas (males: 26, females: 29; mean age: 47.7 years, range: 13-77 years) were treated. The sexes were evenly distributed in the two groups. Patients with G1 were significantly younger than those with G2 tumors (43.3 vs 53.7 years; P < 0.05). There were no statistically significant differences between G1 and G2 concerning peripheral or central localization, laterality or maximum tumor diameters. Patients with G1 had a higher incidence of tumor-related symptoms and a longer mean duration of these symptoms (21.8 months) than G2 cases (14 months) but the differences were not statistically significant either. No case displayed any symptoms of hormonal activity. Fifty-two patients underwent resection, one was non-resectable for anatomical, and one for functional, reasons; a third refused an operation. We performed 8 pneumonectomies, 36 lobectomies (8 by using bronchoplasty), 2 bronchotomies and 6 segmental resections. Twelve G2 cases had N1 or N2 lymph node metastases, two intrapulmonary metastases were removed. After a median observation time of 55.7 months the 10-year survival rate for the total collective is 90.6%. For G1 it is 100%, compared with 76.4% for G2 patients, 3 of whom died of the tumor (P < 0.05; significant). In univariate analysis: age over 48 years, lymphatic invasion, and lymph node metastasis were also significantly correlated with a poor survival rate. Multivariate analysis proved lymphatic permeation to be the only independent prognostic factor (the survival rate was 100% where there was no invasion, but only 74% where this had occurred).
Department of Thoracic and Hyperbaric Surgery, University Medical School of Graz, Austria.
F M
FM
Smolle-Jüttner
H
H
Popper
H
H
Klemen
H
H
Pinter
M
M
Pongratz-Roeger
J
J
Smolle
G
G
Friehs
D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D003528:Carcinoma, Adenoid Cystic / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D002283:Carcinoma, Bronchogenic / Q000145:classification / Q000473:pathology / Q000601:surgery; D016009:Chi-Square Distribution; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis; D015996:Survival Rate