[White nevus of the oral mucosa]

A white sponge nevus of the oral mucosa is described in a 12-year-old girl and her 36-year-old mother. This anomaly, which is inherited as an autosomal dominant trait, deserves no treatment. Because of the bilateral involvement, which is found in the majority of cases, the white sponge nevus is often misdiagnosed as therapy-resistant thrush.