Chorionic bump in early pregnancy associated with first-trim
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Learning points
-A chorionic bump (CB) is defined as a convex bulge from the choriodecidual surface into the first trimester gestational sac.

-The impact of CB on pregnancy outcome is controversial.

-A systematic review has suggested that CB is a risk factor for non-viability in pregnancy; however, if the pregnancy is otherwise normal, then most result in a live birth despite the CB.

A 39-year-old nulliparous woman with a 1-year history of involuntary infertility underwent in vitro fertilization and fresh single blastocyst transfer. Transvaginal ultrasonography on cycle day 51 showed a single intrauterine gestational sac with fetal pole. The crown-rump length measurement was 8.51 mm (6 weeks and 6 days), with a cardiac cavity of 114 beats/min. A 7.0×7.8 mm mass extending from the choriodecidual surface was noted superior to the fetal pole. A second transvaginal ultrasonogram was performed 2 weeks later. This ultrasonogram showed an enlarged yolk sac, minimal interval growth of the fetal pole and absent cardiac activity. The previously visualised mass was still present and measured 10.7×8.3 mm. A missed abortion with an incidental chorionic bump (CB) was diagnosed. The patient was treated with misoprostol. Cytogenetic analysis of products of conception could not be performed due to the absence of viable chorionic villi. Her transvaginal ultrasonogram 4 weeks later was unremarkable.

A CB is defined as a convex bulge from the choriodecidual surface into the first trimester gestational sac.1 The prevalence of CB ranges between 0.4% and 0.7%.2 3 The aetiology of CB remains unknown. However, it is thought that the increased bleeding tendency in the decidual shell caused by the developing placenta plays a role in the formation of the CB.4 5

Source: https://casereports.bmj.com/content/13/7/e236624?rss=1
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Dr. N●●●●t C●●●●●●●y
Dr. N●●●●t C●●●●●●●y Obstetrics and Gynaecology
Implantation not occur so that it develops but prrognosis good in naturally conceived patient. I have one case with twins at 7 week same bump developed in one sac and another sac normal leads to abortion of one after one week and another baby delivered by lacs at 9 month.
Aug 2, 2020Like