Usually develop within a few months of surgery but a small proportion can remain clinically silent for years. They typically occur after laparotomy with rates of ~7.5%.
Incisional hernias occur most frequently through previous laparotomy scars (other incisional hernias are possible, such as a lung hernia). Widening or dehiscence of the scar allows intra-abdominal contents to herniate into the subcutaneous tissues.
Treatment and prognosis
Complications are similar to other hernias, and include incarceration, strangulation and intestinal obstruction.
- 1. Zafar HM, Levine MS, Rubesin SE et-al. Anterior abdominal wall hernias: findings in barium studies. Radiographics. 26 (3): 691-9. doi:10.1148/rg.263055714 - Pubmed citation
- 2. Lassandro F, Iasiello F, Pizza NL et-al. Abdominal hernias: Radiological features. World J Gastrointest Endosc. 2011;3 (6): 110-7. doi:10.4253/wjge.v3.i6.110 - Free text at pubmed - Pubmed citation
- 3. Aguirre DA, Santosa AC, Casola G et-al. Abdominal wall hernias: imaging features, complications, and diagnostic pitfalls at multi-detector row CT. Radiographics. 2005;25 (6): 1501-20. Radiographics (full text) - doi:10.1148/rg.256055018 - Pubmed citation