2. Conjoined twins
Conjoined twins are an extremely rare type of identical twins who are physically joined at birth.
Healthline.com (OMS Preferred Provider)

3. From 'Monsters' to Modern Medical Miracles - Embryology and Classification of Conjoined Twins
Identical twins develop when a single fertilized egg, also known as a monozygote, splits during the first two weeks of conception. Conjoined twins form when this split occurs after the first two weeks of conception. The monozygote does not fully s.....
MedlinePlus (Offsite)

4. Twin-Twin Transfusion Syndrome
Twin-twin transfusion syndrome (TTTS) is a rare disorder that sometimes occurs when women are pregnant with identical (monozygotic) twins. It is a rare disease of the placenta, the organ that joins the mother to her offspring and provides nourishm...
Healthline.com (OMS Preferred Provider)

5. Conjoined Twins
Learn more about conjoined twins, read about the other set of conjoined twins successfully separated at the UM Medical Center and much more in our conjoined twins guide.
www.umm.edu

6. conjoined twins
This is an uncommon complication of monozygous twinning in which there is fusion of the twins.  The scientific term here is craniothoracopagus, or twins joined at the head and chest. There is only one brain, and the hearts and gastrointestinal tra...
medgen.genetics.utah.edu

7. Conjoined twins - MayoClinic.com
Identical (monozygotic) twins occur when a single fertilized egg splits and develops into two fetuses. In a few cases, the fertilized egg fails to separate completely. The babies that develop from this partial separation are called conjoined twins.
www.mayoclinic.com

8. Conjoined Twins / Family Village
This support group is for families of conjoined twins. Support is in the form of phone calls, letters, flowers, and prayers. It sends out a quarterly newsletter and there are plans for a future mountain retreat for families.
www.waisman.wisc.edu

9. Conjoined Twins: eMedicine Pediatrics: Surgery
Treating conjoined twins can be a daunting challenge for the surgeon. Furthermore, these cases often raise religious,
emedicine.medscape.com

10. Conjoined Twins | Seattle Children's Hospital
Conjoined twins begin as a single fertilized egg. Usually a single fertilized egg develops into a single baby. Sometimes a single egg divides in half during the first one to two weeks after it’s fertilized. This creates a set of identical twins.
www.seattlechildrens.org