Giant pulmonary chondroid hamartoma: imaging and pathology correlation of a rare tumor demonstrated with bone scintigraphy and 18F-FDG PET/CT

A 35-year-old man presented to the emergency department with a worsening cough and a history of unintended weight loss. Chest radiograph revealed a giant mass occupying the left hemithorax. On CT scan, the mass measured over 20 cm and shifted the heart into the right hemithorax. Bone scan demonstrated multifocal radiotracer uptake within coarse intratumoral calcifications. Biopsy revealed no malignant cells. However, malignancy was clinically suspected due to size, and FDG PET/CT was performed. Mild FDG uptake was present in the mass. The mass was excised, and pathologic examination revealed the rare diagnosis of a giant pulmonary chondroid hamartoma.