Imaging modalities for inguinal hernia diagnosis: a systematic review

Area of Science:

• Radiology
• Surgical Diagnostics
• Medical Imaging Analysis

Background:

• Inguinal hernias are common surgical conditions.
• Accurate preoperative diagnosis is essential for effective treatment planning.
• Various imaging modalities exist, each with potential diagnostic limitations.

Purpose of the Study:

• To compare the diagnostic precision of Computerized Tomography (CT), Magnetic Resonance Imaging (MRI), and Ultrasound (US) for inguinal hernias.
• To evaluate the sensitivity and specificity of each modality in identifying inguinal hernias and their subtypes (direct/indirect).

Main Methods:

• Systematic review adhering to PRISMA guidelines.
• Searched PubMed, Embase, and Cochrane Library for relevant studies.
• Included studies compared preoperative imaging (CT, MRI, US) with operative or follow-up findings.
• Assessed diagnostic accuracy via sensitivity and specificity.

Main Results:

• Ultrasound (US) exhibited superior sensitivity and specificity in diagnosing inguinal hernias compared to CT and MRI.
• US and CT showed high accuracy in differentiating hernia subtypes.
• Performance metrics varied, influenced by cohort size and operator expertise.

Conclusions:

• Ultrasound is a highly sensitive and specific imaging modality for inguinal hernia diagnosis.
• The effectiveness of US is significantly influenced by the operator's skill level.
• US is recommended as a preferred imaging tool when physical examination is inconclusive, provided adequate expertise is available.