An Incidentally Detected Case of Atypical Bronchial Carcinoid on Stress Myocardial Perfusion SPECT/CT

(A and B) SPECT images showing focal tracer uptake (arrows) in right hemithorax adjacent to myocardium: 3D SPECT image (A) and coronal section image (B). (C) SPECT/CT image showing tracer-avid intrabronchial soft-tissue-density lesion (arrow) in right main bronchus. (D) Hematoxylin and eosin–stained section showing respiratory epithelium. Tumor is seen in subepithelium (×200). (E) Hematoxylin and eosin–stained section showing tumor cells arranged in nests, rosettes, trabeculae, and cords (×400).