Figure 9d. Typical carcinoid in an asymptomatic 38-year-old woman. (a, b) Posteroanterior (PA) (a) and lateral (b) chest radiographs show a well-circumscribed, spherical left hilar mass. (c) Chest CT scan (lung window) demonstrates the lobular, partially endobronchial mass. Note the convex appearance of the lesion within the bronchial lumen. (d) Photograph of a cut section of the resected left upper lobe demonstrates the relationship of the lesion to the bronchus (arrow). Scale is in centimeters.