Which of the following are true regarding bronchial carcinoid tumours?
a) The chest radiograph is normal in most cases at presentation
b) A solitary nodule in the lung periphery is the most common radiographic finding
c) It is a cause of Cushing’s syndrome
d) It results in carcinoid syndrome in 50% of cases
e) An atypical carcinoid frequently metastasises to the hilar lymph nodes
