Figure 13b. Atypical bronchial carcinoid in MEN 1. (a) Contrast-enhanced chest CT scan shows partial right lower lobe collapse due to a calcified atypical endobronchial carcinoid. An associated pleural effusion is also seen. (b, c) CT scans show pleural deposits (b) and multiple liver metastases (c). (d) Corresponding iodine 123 (123I)–metaiodobenzylguanidine (MIBG) scintigram shows increased radiotracer uptake within the right hemithorax and liver, a finding that is consistent with metastatic disease.