Interparietal hernia

Case contributed by Dr Henry Knipe

Presentation

Right lower quadrant pain and swelling.

Patient Data

Age: 50 years
Gender: Female
CT

An anterior abdominal wall hernia arises in the right lower quadrant extending superiorly in the plane between the external oblique fascia and internal oblique fascia. Within the hernia, there is a low-density collection.

Case Discussion

Interparietal hernias are uncommon and occur when the hernia sac lies between the layers of the anterior abdominal wall. They are commonly incisional hernias and most Spigelian hernias as of this type. This patient had a history of previous right inguinal hernia repair, and this is a potential cause. 

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