Computed tomography of omental pathology

Area of Science:

• Radiology
• Abdominal Imaging
• Oncologic Imaging

Background:

• The omentum, a peritoneal fold, can be affected by various pathologies, including inflammation and malignancy.
• Radiographic evaluation is crucial for diagnosing omental disease, but its appearance can be variable.
• Computed tomography (CT) is a primary imaging modality for abdominal assessment.

Purpose of the Study:

• To analyze the radiographic characteristics of benign and malignant omental pathology using computed tomography (CT).
• To identify distinct CT patterns associated with different omental diseases.
• To assess the reliability of CT in evaluating omental pathology.

Main Methods:

• Retrospective review of computed tomographic (CT) scans from 46 patients with documented omental pathology.
• Analysis of radiographic features to categorize omental disease patterns.
• Correlation of imaging findings with clinical diagnoses (benign vs. malignant).

Main Results:

• Four distinct CT patterns of omental pathology were identified: omental caking, smudged fat, cystic masses, and discrete nodules.
• The "smudged" fat pattern was most frequent, seen in 20/39 malignant and 5/7 inflammatory cases.
• Omental caking was observed in 17/46 patients and exclusively associated with malignant disease.

Conclusions:

• Computed tomography (CT) is a reliable radiographic technique for evaluating omental pathology.
• Recognizing variable CT appearances of the omentum aids in differentiating benign from malignant conditions.
• Specific patterns like omental caking are strong indicators of malignancy.