Parasitic rachipagus conjoined twin: case report

Abstract

<jats:p>A parasitic twin represents a rare developmental anomaly in which an asymmetrical, nonviable conjoined twin is attached to the host body at the time of birth. Rachipagus is among the rarest of conjoined twin subtypes and typically features a parasitic twin mass attached at the spine. Herein, the authors review the literature and describe the case of a 9-month-old girl presenting with a rachipagus parasitic twin consisting of a fully developed set of lower extremities originating from the midline upper back. After a complete workup to delineate parasite and autosite anatomy, the parasitic twin mass was successfully excised by a multidisciplinary team of surgeons, and the resulting defect was closed in a single stage.</jats:p>

Onfalopagus parasitic fusioned twin: A case report

“… [3] . They can be classified by the most prominent fusion site [5] . Recognized nomenclature includes 8 of these sites: the thorax (thoracophagus), navel (omphaphagus), hip (ischiophagus), buttocks (pygophagus), spine (rachipagus), side (parapagus), skull (craniophagus), and head (cephalophagus).…”

A rare case of sacral parasitic rachipagus

“…There have only been about 90 such recorded cases in the world [8]. A parasitic twin represents a rare developmental anomaly in which an asymmetrical, nonviable conjoined twin is attached to the host body at the time of birth [4].…”

“…It is an extremely rare anomaly [2,3]. The recognized nomenclature includes eight such sites: the chest (thoracopagus), umbilicus (omphalopagus), hip (ischiopagus), buttocks (pygopagus), spine (rachipagus), side (parapagus), cranium (craniopagus), and head (cephalopagus) [4,5].…”