Fetal rhombencephalon

Case contributed by Dr Matt A. Morgan

Presentation

Abdominal pain. Normal first trimester ultrasound at 8 weeks 4 days.

Patient Data

Gender: Female
Ultrasound

There is a prominent cystic region in the posterior aspect of the embryonic head. This is compatible with the normal fetal rhombencephalon. Smaller round hypoechoic focus represents forebrain.

Annotated image

A blue arrow points to a prominent cystic region in the posterior aspect of the embryonic head. This is compatible with the normal fetal rhombencephalon.

Case Discussion

The fetal rhombencephalon (also known as the "embryonic rhombencephalon" or "cystic rhombencephalon") is a normal finding in an embryo/ fetus at 8-10 weeks of age. It should not be considered a developmental abnormality.

PlayAdd to Share

Case information

rID: 37588
Published: 15th Jun 2015
Last edited: 25th Dec 2019
System: Obstetrics
Inclusion in quiz mode: Excluded