Conjoined Twins
Identical twins born physically connected at various anatomical sites, requiring complex multidisciplinary surgical separation planning.
Full Definition
Conjoined twins are monozygotic twins who remain physically connected after incomplete division of the embryonic disc between days 13-15 of gestation. The connection site determines the classification (thoracopagus, omphalopagus, ischiopagus, etc.) and surgical complexity. Separation surgery requires extensive preoperative imaging, multidisciplinary team planning, and staged procedures. Success depends on the extent of shared organs and vital structures. Ethical considerations regarding quality of life and survival outcomes are integral to decision-making processes.
Usage
Usage note: Use the specific anatomical classification (thoracopagus, omphalopagus, etc.) rather than the outdated term 'Siamese twins.'
In Context
- "The thoracopagus conjoined twins shared a single heart, making separation surgically impossible." — Medical ethics consultation
- "Successful separation of omphalopagus conjoined twins was achieved using tissue expanders and staged reconstruction." — Surgical case series