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Peritoneal carcinomatosis: preoperative CT with intraperitoneal contrast material
R C Nelson1, J L Chezmar, M J Hoel
1Department of Radiology, Emory University School of Medicine, Atlanta, GA 30322.
Radiology
|January 1, 1992
Summary
Computed tomography with intraperitoneal contrast (CTIP) and standard CT scans show limited sensitivity for detecting peritoneal metastases from mucinous tumors. Both methods struggle with detecting disease in the omentum and small bowel mesentery.
Area of Science:
- Radiology
- Oncology
- Abdominal Imaging
Background:
- Peritoneal metastases from mucin-producing tumors present a diagnostic challenge.
- Accurate detection is crucial for treatment planning and patient management.
Purpose of the Study:
- To evaluate the diagnostic performance of computed tomography with intraperitoneal contrast (CTIP) versus standard computed tomography (CT) for detecting peritoneal metastases.
- To identify areas with high and low sensitivity for metastasis detection using both imaging techniques.
Main Methods:
- Retrospective review of 35 abdominal CT scans from 27 patients with known peritoneal metastases from mucin-producing tumors.
- Comparison of CTIP (15 scans) and CT without IP (20 scans) against findings from exploratory laparotomy.
- Analysis of sensitivity for metastasis detection across different abdominal regions.
Main Results:
- Overall sensitivity for CTIP was 61% and for CT without IP was 59%.
- CTIP demonstrated high sensitivity in subphrenic spaces and splenic hilum.
- Both methods showed low sensitivity for detecting metastases in the greater omentum and small bowel mesentery, areas with frequent involvement.
Conclusions:
- CTIP and standard CT have limited sensitivity for detecting peritoneal metastases from mucinous tumors.
- Imaging techniques struggle to identify disease in the omentum and small bowel mesentery, necessitating further investigation for improved detection strategies.