twin to twin transfusion syndrome
MONDO:0019805Mondo
Findings
No curated finding names twin to twin transfusion syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Twin twin transfusion syndrome (TTTS) is a rare condition seen in twin monochorionic pregnancies, typically developing during the 15-26 week gestation period and usually due to unbalanced intertwin placental anastomoses, where an unequal exchange of blood between twins causes oligohydramnios in one sac and polyhydramnios in the other which can lead to a high perinatal mortality rate and a high rate of disability in survivors if left untreated
Definition from the Mondo Disease Ontology (MONDO:0019805), read 2026-09-29. CC BY 4.0.
Where it sits
- Narrower terms (1)
Other names
8 names
Resolves to: twin to twin transfusion syndrome
- Also called
- Feto-fetal transfusion syndromefoetal blood loss from foetal haemorrhage into co-twinfoetal haemorrhage into co-twinplacental transfusion syndromestuck Twin syndromeTwin Anemia Polycythemia Sequencetwin-to-twin transfusion syndromeTwin-Twin transfusion syndrome