MDCT imaging in Spigelian hernia, clinical, and surgical implications

Area of Science:

• Radiology
• Abdominal Imaging
• Surgical Anatomy

Background:

• Spigelian hernia is a rare defect of the transversus abdominis aponeurosis, often presenting with non-specific symptoms.
• Diagnostic challenges arise due to the uncommon nature and subtle clinical presentation of Spigelian hernias.
• Limited radiology literature exists on the imaging findings of Spigelian hernias.

Purpose of the Study:

• To investigate the utility of Multi-detector row CT (MDCT) in evaluating Spigelian hernias.
• To describe the imaging characteristics of Spigelian hernias.
• To correlate imaging findings with clinical and surgical implications.

Main Methods:

• Retrospective observational analysis of 43 Spigelian hernias using MDCT.
• Evaluation of hernia location, neck and sac size, content, and coexistent hernias by two radiologists.
• Correlation of imaging findings with patient demographics and clinical presentation.

Main Results:

• 60% of Spigelian hernias were located below the "hernia belt".
• The interparietal subtype was most common (84%); mean hernia neck diameter was 3.4 cm.
• Most patients were asymptomatic (73%), and 90% had other abdominal hernias.

Conclusions:

• Spigelian hernias frequently occur below the traditional hernia belt and are often of the interparietal subtype.
• MDCT is highly effective for diagnosing Spigelian hernias, surpassing physical examination.
• The study highlights the diagnostic role of MDCT in managing Spigelian hernias.