“Severe cases of pyometra can sometimes be detected by ultrasound in late pregnancy.
If the fetus has thickened skin on the face, a stiff mouth and lips that look like a ‘fish mouth’, or protruding eyelids, which are observed on ultrasound during pregnancy, the baby may be suspected of being a gummy baby.
However, this screening is usually only successful in fetuses with a family history.
In addition, mild cases of flame-gum-like babies may not have a combination of lip and eyelid abnormalities, making them difficult to detect through maternal screening.”