CTICasesEndobronchial Carcinoid Tumor
Imaging findings
Frontal and lateral chest radiographs show multiple branching tubular densities (finger-in-glove sign) in the right lower lobe, converging toward the hilum. Chest CT confirms bronchiectasis with extensive central mucoid impaction in the right lower lobe. A small, hypervascular endobronchial nodule is present within the segmental bronchus, which demonstrates intense uptake on Ga-68 DOTATATE PET/CT.
Key takeaways
The finger-in-glove sign represents dilated, mucus-filled bronchi (mucoid impaction) distal to an obstructing lesion. In adults, this obstruction can be secondary to a benign or low-grade malignant neoplasm, such as an endobronchial carcinoid tumor. Carcinoid tumors express somatostatin receptors, making Ga-68 DOTATATE PET/CT highly sensitive and specific for localization and staging.
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