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Carcinoid tumors: imaging procedures and interventional radiology
S Wallace1, J A Ajani, C Charnsangavej
1Department of Diagnostic Radiology, Division of Diagnostic Imaging, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, U.S.A.
World Journal of Surgery
|February 1, 1996
Summary
Radiologists play a key role in diagnosing and managing carcinoid tumors using advanced imaging like CT and MRI. Interventional radiology offers effective treatments for liver metastases, including embolization.
Area of Science:
- Radiology
- Interventional Radiology
- Oncology
Background:
- Carcinoid tumors are hypervascular, enabling aggressive radiologic intervention.
- Appendiceal carcinoids, the most common type, often evade early detection.
Purpose of the Study:
- To outline the diagnostic and interventional radiologic roles in managing carcinoid tumors and their metastases.
- To review imaging modalities and treatment strategies for carcinoid disease.
Main Methods:
- Utilized double-contrast gastrointestinal studies for primary neoplasms.
- Employed computed tomography (CT), CT-angioportography (CTAP), ultrasonography (US), magnetic resonance imaging (MRI), and octreotide scintigraphy for metastases.
- Performed percutaneous needle biopsy for diagnosis and hepatic arteriography for interventional procedures.
Main Results:
- CT excels at visualizing mesenteric masses and lymph node metastases ("spokewheel" pattern).
- Hepatic metastases are detectable via multiple imaging techniques.
- Hepatic vascular occlusion therapy shows a 50% response rate for inoperable liver metastases with a 5% mortality.
Conclusions:
- Radiology is crucial for both diagnosis and interventional management of carcinoid tumors.
- Various imaging techniques are available for detecting primary and metastatic carcinoid disease.
- Interventional therapies like embolization and chemoembolization are effective for liver metastases.