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placental chorioangioma
Epidemiology:
- most common tumour of the placenta
- 1% of pregnancies
- most found incidentally
Pathology:
- benign vascular tumour of placental origin
- hought to arise as a malformation of primitive angioblastic tissue of the placenta
- perfused by fetal circulation
Clinical manifestations:
- most are asymptomatic
Laboratory:
- serum alpha-fetoprotein may be elevated (form maternal blood)
Radiology:
- ultrasound
- hypo-echoic, rounded mass, located near the chorionic plate
Complications:
- if large or multiple, can result in poor maternal &/or fetal outcome
- platelet sequestration, fetal thrombocytopenia
- hydrops fetalis.
- polyhydramnios
- premature labor
- intrauterine growth retriction
- placental abruption
- pre-eclampsia
Management:
- generally observed without intervention
General
placental neoplasm
vascular tissue neoplasm; angioma
References
- Radiopaedia.org: Placental chorioangioma
http://radiopaedia.org/articles/placental-chorioangioma