Definition: Passage of blood from one fetus to another via an arteriovenous communication or other shunt, in a monozygotic twin pregnancy. It results in anemia in one twin and polycythemia in the other. (Lee et al., Wintrobe's Clinical Hematology, 9th ed, p737-8)
"passage of blood from one fetus to another via an arteriovenous communication or other shunt"; do not use /congen & do not coord with INFANT, NEWBORN, DISEASES; do not coord with DISEASES IN TWINS; TN 186: differentiate among various "transfusion" conce