Portal de Periódicos da CAPES

IMPORTANCE OF ANGIOGRAPHIC STUDY IN PREOPERATIVE PLANNING OF CONJOINED TWINS: CASE REPORT

2006; Elsevier BV; Volume: 61; Issue: 2 Linguagem: Inglês

10.1590/s1807-59322006000200013

1980-5322

Francisco César Carnevale, Marcus Vinicius Borges, Breno Boueri Affonso, Ricardo Augusto de Paula Pinto, Uenis Tannuri, João Gilberto Maksoud,

Assisted Reproductive Technology and Twin Pregnancy

The occurrence of conjoined twins is rare. Its actual prevalence is unknown, but it is estimated to range from 1:50,000 to 1:200,000 with a higher level of incidence in Southwest Asia and Africa where an occurrence of 1:14,000 to 1:25,000 is observed, with a female predominance ratio of 3:1. Its etiology is unknown, but an incomplete division of the zygote between 13th and 15th days after fertilization probably occurs. About 40% to 60% of the conjoined twins are born alive, [...]