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contentuptodate· Content· item f8_36_8770

©2013 UpToDate ® Print Email Spigelian hernia Herniation of fat through a defect in the aponeurosis between the left rectus abdominis (white arrow) and the aponeurosis of the left transversus abdominis and internal oblique muscles. The lateral margin of the hernia sac is the external oblique muscle and fascia (yellow arrow). Reproduced with permission from: Eisenberg, RL. Clinical Imaging: An Atlas of Differential Diagnosis, Fourth Edition. Philadelphia: Lippincott Williams & Wilkins, 2003. Copyright © 2003 Lippincott Williams & Wilkins.