Epibulbar Dermoid, Hemivertebra and Gestational Diabetes





QUESTION:


Hi, how can epibulbar dermoid, hemivertebrae, and cardiac problems be related to gestational diabetes?





Quick Answer
An epibulbar dermoid with hemivertebrae and a heart defect may suggest oculo-auriculo-vertebral spectrum, also called Goldenhar syndrome. Maternal diabetes is a recognized risk factor for some congenital malformations, but it does not prove that diabetes caused these findings. Structural birth defects are linked most strongly to high glucose around conception and during early organ development—not to ordinary gestational diabetes first diagnosed at 24–28 weeks.


Answer by Dr. Albana Greca, MD, MMedSc



Hello,



These findings cannot be attributed to gestational diabetes without knowing when glucose became high, the exact heart defect and the child’s full diagnosis.



What Is an Epibulbar Dermoid?



An epibulbar or limbal dermoid is a benign congenital growth made of normal skin-like tissue in an unusual place on the eye surface.



It may cause irritation, astigmatism, amblyopia or difficulty closing the eyelid. Small lesions may only need observation, while others require glasses, amblyopia treatment or surgery. A pediatric ophthalmologist should guide care.



What Is a Hemivertebra?



A hemivertebra is an incompletely developed vertebra that may cause congenital scoliosis. An isolated hemivertebra may cause little difficulty, while multiple abnormalities or progressive curvature may require orthopedic care or surgery.




Terminology: “Hemivertebrae cardiac” is not a standard diagnosis. It may mean a hemivertebra together with a congenital heart defect. Ask the specialist for the exact names of both findings.


Could These Findings Be Part of One Condition?



Possibly. Epibulbar dermoids and vertebral abnormalities occur in oculo-auriculo-vertebral spectrum, or Goldenhar syndrome. Some children also have ear abnormalities, facial asymmetry, jaw differences, hearing loss, heart defects or kidney abnormalities.



These features may also occur separately or in another condition. A pediatric geneticist should review the complete pattern and decide whether genetic testing is appropriate.



How Is Maternal Diabetes Related?



High glucose around conception and during early pregnancy can increase the risk of diabetic embryopathy, including heart, brain, kidney and skeletal malformations. Risk rises with higher maternal HbA1c during the first ten weeks.



Organ formation occurs mainly around weeks 5–8 of gestation. Maternal diabetes has also been reported as a risk factor for oculo-auriculo-vertebral abnormalities, but this association does not prove causation. The condition is multifactorial, and many affected babies are born to mothers without diabetes.




Important: Congenital abnormalities often have complex or unknown causes. Even excellent glucose management cannot prevent every birth defect.


Gestational Diabetes Is an Important Distinction



Gestational diabetes is usually diagnosed at 24–28 weeks, after the main period of organ formation. It is more strongly associated with a large baby, difficult delivery, newborn low glucose, preeclampsia and other pregnancy complications than with structural defects that formed earlier.



If high glucose was present before pregnancy or during the first trimester but discovered later, it may represent previously unrecognized type 2 diabetes or early abnormal glucose metabolism rather than ordinary late-onset gestational diabetes.



Read more about gestational diabetes symptoms, testing and control.



What Evaluation Is Appropriate?



If the findings were discovered during pregnancy, care may include maternal-fetal medicine, genetic counseling, a detailed anatomy ultrasound and fetal echocardiography. After birth, the child may need a pediatrician or geneticist, pediatric cardiologist, pediatric ophthalmologist, orthopedic or spinal specialist, and hearing assessment.



The prognosis depends on the complete pattern and especially the severity of any heart, airway, neurological or spinal problem. It cannot be predicted from “dermoid” and “hemivertebra” alone.




Seek urgent pediatric care if the baby has blue or gray lips, breathing difficulty, poor feeding, unusual sleepiness, fainting or seizures.


Managing Glucose During Pregnancy



Pregnancy requires pregnancy-specific targets. Common ADA goals are fasting glucose below 95 mg/dL, one-hour after-meal glucose below 140 mg/dL, or two-hour after-meal glucose below 120 mg/dL. The maternity team may individualize these targets.



Follow the prescribed monitoring, nutrition and medication plan. Do not stop insulin because of fear that it caused the abnormality; insulin is used to reduce the risks of high glucose.



See controlling gestational diabetes and gestational diabetes treatment.



My Advice



Ask whether the findings suggest oculo-auriculo-vertebral spectrum or another congenital syndrome. Request the exact name of the cardiac defect and whether genetic testing, fetal echocardiography, hearing testing, kidney imaging and spinal follow-up are recommended.



Also review the mother’s glucose and HbA1c from before conception and the first trimester. This timing is more informative for structural malformations than a gestational diabetes diagnosis made later.



Hope this helps.


Dr. Albana Greca



Related Questions




Related Resources




References





Educational only — not personal medical advice. Congenital eye, spinal and cardiac findings require individualized evaluation by fetal-medicine, pediatric, genetics and specialist teams.


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