extraossäres Ewingsarkom

Extra osseus

Ewings sarcoma / PNET with sacral and sciatic nerve involvement.. A T1 isointense lobulated mass lesion in the presacral space extending through the left greater sciatic foramen into the gluteal region.

MRI imaging

of soft tissue tumours of the foot and ankle. Extraosseous Ewing’s sarcoma. a Coronal T1W and (b) sagittal T2FS images of the foot. The lesion is isointense on T1W and hyperintense on T2FS and lies superficial to the plantar fascia

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

Extraskeletal

Ewing sarcoma. Radiographs show an osteochondroma (white arrow) and a soft-tissue mass, not seen in the AP projection, obliterating the Kager fat pad (pink arrows).

Extraskeletal

Ewing sarcoma. US reveals an hypoechoic oval soft-tissue mass with internal vascularization at Colour Doppler US. Posterior tibial nerve can be seen apparently entering the lesion (arrows).

Extraskeletal

Ewing sarcoma. STIR image demonstrates a hyperintense lesion.

Extraskeletal

Ewing sarcoma. T1W image reveals an oval mass obliterating the Kager fat pad. The mass demonstrates intermediate to high signal intensity. The posterior tibial nerve can be seen apparently entering the lesion (arrow).

Extraskeletal

Ewing sarcoma. T2W image reveals a heterogeneous signal intensity mass with areas of both intermediate and high signal intensity.

Extraskeletal

Ewing sarcoma. T1FSW image after contrast administration: the mass demonstrates diffuse enhancement, slightly heterogeneous.

A rare case

report of Extraskeletal Ewing"s sarcoma of the trachea. Plain CT Thorax shows a well defined polypoidal soft tissue density lesion in the left anterolateral wall of the trachea at T2 vertebral level with significant luminal narrowing and mediastinal extension

A rare case

report of Extraskeletal Ewing"s sarcoma of the trachea. CT Thorax lung window shows no abnormalities in lung parenchyma.