Multiple Chorangioma Following Long-Term Secondary Infertility: A Rare Case Report and Review of Pathologic Differential Diagnosis.

Chorangioma (placental hemangioma) is a benign non-trophoblastic neoplasm of the placenta. Small chorangiomas are usually asymptomatic, but the giant and multiple ones rarely have a favorable outcome. We report a case of 29 weeks of gestational age (after long-term secondary infertility) with premature labor pain and undiagnosed multiple chorangioma leading to hydrops fetalis and neonatal death. Here we report the clinicopathological features of our case and chorangioma in general, along with comparison of different vascular lesions of placenta in terms of incidence, risk factors, complications, histologic origin, macroscopic and light and electron microscopic features.