1. Placental tumor (chorioangioma) as a cause of polyhydramnios: a case report;Abdalla;Int J Womens Health,2014
2. Placental chorioangioma: usual presentation and alternate treatment options;Vaidyanathan;Journal of Case Reports,2017
3. Chorioangiomas-new insights into a well-known problem. II. An immuno-histochemical investigation of 136 cases;Guschmann;J Perinat Med,2003
4. Placental chorioangioma: literature review;Fan;J Perinat Med,2014
5. Coletta JM , Chorioangioma D’Alton ME. . Obstetric imaging: fetal diagnosis and care. 2nd edn: Elsevier, 2018:437–8.