ACR Appropriateness Criteria® Palpable Abdominal Mass-Suspected Neoplasm

Area of Science:

• Radiology
• Medical Imaging
• Diagnostic Procedures

Background:

• Palpable abdominal masses present a broad differential diagnosis, including benign and malignant conditions.
• The diagnostic approach for abdominal masses differs based on whether they originate intra-abdominally or from the abdominal wall.

Purpose of the Study:

• To review evidence supporting imaging approaches for palpable intra-abdominal neoplasms and abdominal wall masses.
• To align diagnostic imaging strategies with established guidelines like the American College of Radiology Appropriateness Criteria.

Main Methods:

• Review of current medical literature from peer-reviewed journals.
• Application of evidence-based methodologies (RAND/UCLA Appropriateness Method, GRADE) to assess imaging appropriateness.
• Incorporation of expert opinion where evidence is lacking or equivocal.

Main Results:

• Contrast-enhanced CT and ultrasound are accurate for intra-abdominal masses.
• MRI, CT, and ultrasound offer diagnostic value for abdominal wall masses.
• Imaging selection is location-dependent for accurate diagnosis.

Conclusions:

• Tailored imaging strategies are crucial for diagnosing palpable abdominal masses.
• Adherence to evidence-based guidelines ensures appropriate and effective diagnostic pathways.
• Imaging modality selection should be guided by the suspected origin of the mass.