Prenatal detection of Pai syndrome without cleft lip and palate: a case report.

Pai syndrome is a rarely encountered disease characterized by findings of median cleft lip, facial skin polyps, nasal mucosal polyps and midline central nervous system lipoma. We report a case with prenatal detection of a pericallosal lipoma and a skin tag on the forehead. After delivery, the diagnosis was confirmed as a case of Pai syndrome.