Which of the following statements about typical carcinoid tumors are true?

A. They make up the majority of bronchial adenomas.

D. Overall survival at 5 years is 90%.

DISCUSSION: Eighty-five per cent of bronchial adenomas are carcinoid tumors. Typical carcinoid tumors have few mitotic figures and infrequent lymph node metastases (fewer than 10%). Only 10% to 15% of patients present with the carcinoid syndrome (flushing, wheezing, diarrhea). Survival after resection is more than 90% at 5 years but decreases to approximately 50% for atypical histology.