pyopagus

pyopagus

twin fetuses joined together at the sacrum.
References in periodicals archive ?
Thorax (thoracopagus 30-40%), abdomen (omphalopagus 25-30%), pyopagus (10-20%), pelvis (ischiopagus 20%), face (cephalopagus), skull (craniopagus 2-16%), back (rachipagus).
8) Craniopagus and thoracopagus separation is a tedious affair because they may share vital structures, while ischiopagus and pyopagus can be separated surgically and have good outcome.
Ischiopagus and pyopagus conjoined twins: neurosurgical considerations.