Umbilical hernias are the most common ventral hernia and occur in the midline.
Ten times more common in females 2 and represent ~5% of all abdominal hernias 4.
Umbilical hernias present in the midline as painless or painful mass.
Umbilical hernias may be congenital or acquired 1,2:
- congenital: physiological herniation through the umbilicus occurs during the 10th week of gestation and congenital umbilical hernias occur when there is incomplete closure of the anterior abdominal wall after the gut returns to the abdominal cavity
acquired: more common in adults
- risk factors: obesity, multiparity, ascites, large intra-abdominal mass
Umbilical hernias commonly contain fat, mesentery or small and/or large bowel.
Treatment and prognosis
- 1. 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
- 2. Aguirre DA, Casola G, Sirlin C. Abdominal wall hernias: MDCT findings. AJR Am J Roentgenol. 2004;183 (3): 681-90. doi:10.2214/ajr.183.3.1830681 - 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
- 4. Dähnert W. Radiology Review Manual. LWW. (2011) ISBN:1609139437. Read it at Google Books - Find it at Amazon