Fig. 13
From: Tumor and tumorlike conditions of the pleura and juxtapleural region: review of imaging findings
Diagnosis: extraskeletal Ewing sarcoma. Technique: standard chest radiography and contrast-enhanced chest CT. Description: A 17-year-old man presented with localized right-sided chest pain. Postero-anterior and lateral chest radiographs (a, b) show a well-delineated mass located posterior in the right lung. Axial contrast-enhanced CT (c) in the mediastinal window setting shows a heterogeneous mass with intralesional necrosis and focal bony destruction of the corpus of the vertebra, pedicle, and the posterior side of the rib (arrows), best seen in the bone window (d). The young age of the patient, locoregional bone destruction, and extensive soft tissue component is suggestive of an extraskeletal Ewing sarcoma