Prenatal Diagnosis and Postnatal Findings of Cephalothoracopagus Janiceps Disymmetros : A Case Report

Abstract EN

Conjoined twins are rare variants of monozygotic twins, which result from an incomplete division of the embryonic disk.

Cephalothoracopagus is a rare twin pregnancy described as imperfect fusion of the head and chest, but separated columns, limbs, and pelvis.

They occur with incidence rates that range from 1 per 50,000 to 1 per 100,000 births; however, the incidence of the cephalothoracopagus variety is 1 per 58 conjoined twins.

In the case of identical and symmetric faces caused by the orientations of the 2 notochordal axes that are perfectly ventroventral, they are called janiceps disymmetros.

We present a prenatal diagnosis of a typical case of cephalothoracopagus janiceps disymmetros and the diagnostic confirmation by image and pathology exams.