Related Experiment Videos
Extraosseous Ewing's sarcoma. Computed tomography evaluation before and after chemotherapy
1Division of Diagnostic Imaging, University of Texas M.D. Anderson Cancer Center, Houston.
Clinical Imaging
|June 1, 1989
Summary
Computed tomography (CT) is valuable for diagnosing extraosseous Ewing's sarcoma, assessing tumor characteristics, and monitoring treatment response. This imaging technique aids in detecting metastases and evaluating tumor changes during chemotherapy.
Area of Science:
- Oncology
- Radiology
- Medical Imaging
Background:
- Extraosseous Ewing's sarcoma is a rare malignant bone tumor.
- Accurate diagnosis and staging are crucial for effective treatment planning.
Purpose of the Study:
- To evaluate the utility of computed tomography (CT) in diagnosing and managing extraosseous Ewing's sarcoma.
- To assess CT's role in determining tumor characteristics and treatment response.
Main Methods:
- Retrospective analysis of 14 patients with extraosseous Ewing's sarcoma.
- Evaluation using conventional radiography and contrast-enhanced computed tomography (CT).
Main Results:
- CT identified tumor locations in lower extremities, chest wall, pelvis, and paravertebral regions.
- Contrast-enhanced CT revealed necrotic soft tissue masses, with or without peripheral enhancement.
- CT accurately determined tumor size, bone integrity, medullary cavity status, and presence of metastases.
- CT demonstrated significant tumor response to chemotherapy in most treated patients.
Conclusions:
- Computed tomography is an effective imaging modality for extraosseous Ewing's sarcoma.
- CT aids in characterizing tumor extent, detecting metastases, and monitoring therapeutic efficacy.
- Imaging findings guide treatment decisions, including the need for surgical intervention in resistant cases.