Twin reversed arterial perfusion (TRAP) sequence and placenta accreta.

TRAP sequence is a rare and severe complication of monozygotic pregnancies. We present the case of a 35 years old woman, diagnosed with a TRAP sequence for her second pregnancy, whose delivery was complicated of a severe hemorrhage from an unknown placenta accreta, making a hysterectomy necessary. If abnormal placentation is more frequent in multiple pregnancies, the physiopathology of TRAP sequence could explain the association with accreta placentation. One should keep in mind that a rare pathology can hide another.