Fig. 1: Chest radiograph of a 24-year-old man shows a dense retrocardiac opacity and a dense nodule in the right lower lobe (arrows).
Fig. 2: Axial CT image confirms the presence of multiple nodules in the lungs (arrows). The nodules/masses have a soft tissue component and are partially calcified. They are predominantly in the lower lung zones.
- Calcified/ossified metastasis: osteosarcoma, chondrosarcoma, mucinous adenocarcinoma of colon or breast, papillary carcinoma of thyroid, cystadenocarcinoma of ovary and carcinoid
- Infections: tuberculosis, histoplasmosis
- Treated neoplasm: lymphoma following radiotherapy