Related Experiment Videos
Midgut carcinoid tumours. CT appearance
E Sugimoto1, L E Lörelius, B Eriksson
1Department of Diagnostic Radiology, University Hospital, Uppsala, Sweden.
Acta Radiologica (Stockholm, Sweden : 1987)
|July 1, 1995
Summary
Computed tomography (CT) aids in staging midgut carcinoid tumors by identifying metastases, though it struggles with primary tumor detection. It is valuable for assessing tumor spread and monitoring disease progression.
Area of Science:
- Oncology
- Radiology
- Gastroenterology
Background:
- Midgut carcinoid tumors are neuroendocrine neoplasms requiring accurate staging for effective treatment.
- Computed tomography (CT) is a key imaging modality in oncological practice.
Purpose of the Study:
- To evaluate the utility of CT in staging and follow-up of midgut carcinoid tumors.
- To determine the sensitivity and specificity of CT in detecting primary tumors and metastases.
Main Methods:
- Retrospective analysis of CT scans from 80 patients with histologically confirmed midgut carcinoid tumors.
- Review of initial staging scans and follow-up examinations over a median of 3 years.
- Correlation of imaging findings with biochemical markers (U-5-HIAA).
Main Results:
- CT detected liver metastases in 68% of patients, mesenteric metastases in 21%, and retroperitoneal adenopathy in 24%.
- In 21% of cases, CT was normal despite elevated U-5-HIAA, indicating limitations in detecting primary tumors.
- Disease progression (new lesions) was identified in 39 patients during follow-up.
Conclusions:
- CT is valuable for assessing the extent of carcinoid tumor spread and for monitoring disease progression.
- CT has limited sensitivity for detecting primary midgut carcinoid tumors.
- Combined with biochemical markers, CT plays a crucial role in the management of midgut carcinoid tumors.