chorangioma

chorangioma

A type of capillary haemangioma arising in the placenta, which is usually an incidental finding; however, if large, it may lead to platelet sequestration or intrauterine growth retardation due to arteriovenous shunting.

DiffDx
Metastatic foetal neuroblastoma (no malignant small round blue cell infiltrate), choriocarcinoma (no pleomorphic tumour cells), chorangiosis (less diffuse).
References in periodicals archive ?
Chen et al (2) analyzed DNA from the fetus and different parts of the placenta from 2 cases of PMD and confirmed genetic identity among the chorangioma, vesicle-like villi, and the fetus.
Pregnancy with concomitant chorangioma and placental vascular malformation with mesenchymal hyperplasia.
This theory is based on observations of mesenchymal hyperplasia in stem villi along with other placental mesenchymal proliferative disorders such as chorangiomas and chorionic vessel dilatation as well as hemangiomas of the fetus.
1,7,9,26,28) Discrete chorangiomas may be identified.
Monitoring is indicated in cases of fetal arrhythmia, nonimmune hydrops, placental chorangioma, and aneurysm of Galen's vein.
Placental conditions that have been associated with chorangiosis include umbilical cord anomalies, single umbilical artery, abruptio placentae, placenta previa, chorangioma, amnion nodosum, and villitis (rubella virus, cytomegalovirus, syphilis, and Bartonella sp are known to infect and induce proliferation of the endothelial cells).
The placenta weighed 338 g and was significant for a subchorionic chorangioma and multifocal fibrin deposits.