FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term twin-to-twin transfusion syndrome ID (Ontology) DOID:13576 (Human Disease)
Definition A neonatal anemia that is characterized by an increased number of arteriovenous anastomoses deep in the placenta. These capillary connections occur in the cotyledon portion of the placenta. Unidirectional flow can occur in these arteriovenous anastomoses and result in shunting of blood towards one twin and away from the other when the arteriovenous anastomoses are unbalanced.
Also Known As "Fetal blood loss from fetal hemorrhage into co-twin" ; "Fetal hemorrhage into co-twin" ; "Twin to twin transfusion" (for all, see Synonyms field below)
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  anemia
   |__neonatal anemia
       |__twin-to-twin transfusion syndrome
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Is a neonatal anemia
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Synonyms
  • "Fetal blood loss from fetal hemorrhage into co-twin" EXACT
    "Fetal hemorrhage into co-twin" EXACT
    "Twin to twin transfusion" EXACT
    "Twin-to-twin blood transfer" EXACT
Secondary IDs
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ICD10CM:O43.02
MESH:D005330
NCI:C113824
SNOMEDCT_US_2023_03_01:13404009
UMLS_CUI:C2909036