Idiopathic parietal bone thinning mimicking a bone lesion

Area of Science:

• Pediatric Radiology
• Developmental Pediatrics
• Craniofacial Anomalies

Background:

• Idiopathic focal unilateral skull thinning is a rare condition.
• Explanations for skull thinning often involve trauma or disease.
• In some cases, the etiology remains unclear, necessitating a review of patient history.

Observation:

• A nine-year-old boy presented with unilateral parietal bone thinning.
• The thinning was crescent-shaped and unilateral.
• The patient had a history of ventouse-assisted birth.

Findings:

• The observed skull lesion's shape, size, and location were consistent with the imprint of a ventouse (vacuum extractor).
• This case, supported by one prior report, suggests a link between ventouse-assisted birth and focal skull thinning.
• The findings provide evidence for an obscure phenomenon of birth trauma-related cranial deformities.

Implications:

• Ventouse-assisted birth may be an overlooked cause of focal unilateral skull thinning in pediatric patients.
• This finding can aid clinicians in diagnosing unexplained cranial lesions in children.
• Further research into birth-related cranial trauma is warranted to understand such rare phenomena.