Obstet Gynecol Sci.  2016 May;59(3):233-237. 10.5468/ogs.2016.59.3.233.

Chorioamniotic membrane separation caused by the seromucinous collection from a placental chorioangioma

• Eom HM
• Kim YN
• Choi BH
• Jeong EJ
• Byun JM
• Jeong DH
• Sung MS
• Lee KB
• Kim KT
• Yoon HK

• KMID: 2351790
• DOI: http://doi.org/10.5468/ogs.2016.59.3.233

Abstract

Placental chorioangioma is a benign non-trophoblastic tumor of the placenta that can have various adverse effects on the mother and fetus depending on its size. Chorioamniotic membrane separation is rare condition of detachment between the amniotic membrane and chorionic membrane. Chorioamniotic membrane separation after the second trimester of pregnancy is usually occurs after invasive procedures or may occur spontaneously; it is mostly associated with fetal abnormalities. Here, we report a case of chorioamniotic membrane separation that might be occurred caused by the seromucinous secretion from a placental chorioangioma.

Keyword

Chorioamniotic membrane separation; Hemangioma; Placenta

MeSH Terms

Amnion
Chorion
Female
Fetus
Hemangioma*
Humans
Membranes*
Mothers
Placenta
Pregnancy
Pregnancy Trimester, Second

Figure

• 

  Fig. 1 Antenatal ultrasound and gross findings. (A) 4.84×6.33-cm-sized mixed solid and cystic mass with high vascularity within the placenta (arrow). (B) Extensive subchorionic hypoechogenic lesion (arrow). (C) Operation finding; profuse seromucinous fluid after incision of uterus. (D) Gross appearance of the placental fetal surface; a relatively circumscribed solid mass, measuring up to 6.0 cm in diameter and multiple cystic spaces filled with yellowish fluids.

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  Fig. 2 Pathologic findings. (A) Cut section of placenta shows relatively circumscribed grayish white solid mass (arrow) with focal calcification, measuring 6.0 cm in long diameter, and cystic space (*), filled with seromucinous fluids, and located between placental tissue (p) and mass. (B) Microscopically the cystic spaces (*) between chorioamniotic membrane (m) (H&E, ×40). (C) Placental tissue (p) are filled with fluid materials (H&E, ×40). (D) Another cystic areas between membranous tissues (m) (H&E, ×40). (E) Chorioangioma mass with (F) degenerative change and calcification (H&E, ×40; inset, ×200).

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