In utero and postnatal imaging findings of parasitic conjoined twins (ischiopagus parasiticus tetrapus)

Abstract

Conjoined twins are a rare developmental anomaly with a reported prevalence of 1.47 per 100,000 births. We present an uncommon case of a parasitic ischiopagus tetrapus with a parasitic ischiopagus partial twin joined to the complete fetus at the level of the ischium diagnosed in utero by fetal MRI. The correct prenatal diagnosis led to birth by caesarean section. Prenatal MRI findings are presented and corroborated by postnatal imaging delineating the full extent and associated anomalies of this rare malformation. Differential diagnosis of duplicated lower extremities is discussed.

Successful management of a parasitic ischiopagus conjoined twins in a low‐income setting

“…Finally, in typical ischiopagus PCTs, the parasite usually presents with some internal viscera and often shares genitourinary organs or colon with the autoside . Moreover, it is not infrequent to find parasitic external genitalia or autoside's malformations such as defects of abdomen wall or neural tube defects (Table ).…”