Benign multiple diffuse neonatal hemangiomatosis after a pregnancy complicated by polyhydramnios and a placental chorioangioma.

A male newborn with multiple cutaneous hemangiomatosis is described. Pregnancy was complicated by polyhydramnios and a large placental chorioangioma. After an initial outburst of the hemangiomas in the first two weeks of life, spontaneous and almost complete regression occurred before the age of 3 months. The relationship between hemangiomas and placental chorioangioma is briefly discussed.