POMC and neoplasm: Among the 24 patients, 18 patients with 18 lesions were diagnosed with ectopic ACTH-secreting tumours (typical carcinoids, n =12; atypical carcinoids, n = 5; SCLC, n =1) while six patients with eight lesions were diagnosed with pulmonary infections (cryptococcosis, n = 3; aspergillosis, n = 4; pulmonary abscess, n = 1).