First described by Quintero and collaborators in 1998, laser photocoagulation of placental vascular anastomoses is the mainstay of the treatment of twin-twin transfusion syndrome. The use of the selective technique (SLPCV), an anatomic surgical technique described by Quintero that preserves any healthy placental vessels, is the reason for the highest clinical success outcomes of The Fetal Institute. SLPCV is also offered to patients with type II Selective Intrauterine Growth Restriction (SIUGR) type II Vasa Previa, and chorioangioma, among other conditions. The procedures are done in the Hospital in the main Operating Room, under maximum antiseptic technique.