Gastroschisis and exomphalos omphalocoele

Gastroschisis (Fig. 23.4a) and exomphalos (or omphalocele) (Fig. 23.4b) are two distinct types of major congenital abdominal wall defects (Table 23.6), each accounting for about 1 in 5000 births. In recent years the incidence of gastroschisis appears to be increasing.

Gastroschisis is a small full thickness defect of the anterior abdominal wall just to the right of the umbilicus. The aetiology is unknown but is believed to be either an in utero rupture of a small exomphalos or a localized infarction related

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Figure 23.4. (a) Exomphalos; (b) Gastroschisis.

Table 23.6. Abdominal wall defects.

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