A Lanz incision is a specific type of abdominal incision. It is sited in the right iliac fossa. Compared to McBurney's incision:
Its transverse lie tends to make the iliohypogastric and ilioinguinal nerves more susceptible to division. This can predispose the patient to later inguinal herniation.
A Lanz incision is used commonly for access to the appendix and caecum. A mirror image incision in the left iliac fossa can be used for access to the left colon but not the rectum.
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