Diffusion-weighted imaging in hemorrhagic abdominal and pelvic lesions: restricted diffusion can mimic malignancy

Area of Science:

• Radiology
• Medical Imaging
• Pathology

Background:

• Diffusion-weighted imaging (DWI) is crucial for evaluating abdominal and pelvic lesions.
• Restricted diffusion on DWI can be misinterpreted as malignancy.
• Hemorrhagic lesions pose a diagnostic challenge.

Purpose of the Study:

• To review benign hemorrhagic lesions that exhibit restricted diffusion on DWI.
• To differentiate these lesions from malignant ones.
• To provide histopathologic correlation for accurate diagnosis.

Main Methods:

• Literature review of DWI findings in abdominal and pelvic lesions.
• Analysis of cases with benign hemorrhagic lesions showing restricted diffusion.
• Correlation with histopathologic findings.

Main Results:

• Benign hemorrhagic lesions can demonstrate restricted water diffusion.
• This restricted diffusion can be erroneously attributed to malignancy.
• Histopathologic correlation confirms the benign nature of these lesions.

Conclusions:

• Awareness of benign hemorrhagic lesions with restricted diffusion is essential.
• DWI interpretation requires careful consideration of lesion characteristics.
• Accurate diagnosis prevents unnecessary treatment for benign conditions.