Fig. 11
From: Tumor and tumorlike conditions of the pleura and juxtapleural region: review of imaging findings
Diagnosis: osteosarcoma. Technique: standard chest radiography and contrast-enhanced chest CT. Description: A 50-year-old man presented with complaints of right-sided chest pain. The postero-anterior chest radiograph (a) shows a large mass located at the lateral side of the right hemithorax with an associated pleural effusion. Note also a lytic expansion of the 8th left rib. The axial contrast-enhanced CT in the mediastinal window setting (b) confirms the heterogeneous mass with intralesional necrosis and calcifications originating from the 7th right rib, with focal expansive destruction, best seen in the bone window (c). There is a known pleural effusion with adjacent compression atelectasis of the right lower lobe. Histopathologic examination of the large mass confirmed the diagnosis of an osteosarcoma. The expansive tumorlike lytic lesion of the 8th left rib corresponds with fibrous dysplasia