Obstetrician Neila Dahas of the Santa Casa de Misericodia Hospital in the city of Belem says the twins were born Monday by Cesarean section.
She says on the hospital’s website that each boy has his own brain and spinal cord, but they share all other organs, including the heart, lungs and liver.
Dahas says it is too early to tell how the twins will develop.
She says one of the boys is having respiratory problems and requires “special care.”
The boys are named Jesus and Emanuel.
Calls to the hospital for more details went unanswered.