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Related Experiment Video

Updated: Nov 3, 2025

The Spared Nerve Injury SNI Model of Induced Mechanical Allodynia in Mice

The Spared Nerve Injury SNI Model of Induced Mechanical Allodynia in Mice

Published on: August 18, 2011

NAI: never actually injured.

David Kilgarriff¹, Sinead Brannick², Edwina Daly²

¹Department of Paediatrics, Tallaght Hospital Library, Adelaide and Meath Hospital, Dublin, Ireland david.kilgarriff@ucdconnect.ie.

BMJ Case Reports

|June 1, 2021

Summary

A rare case of congenital vault depression, mimicking non-accidental head injury in an infant, was diagnosed and resolved. This condition, also known as faulty fetal packing, highlights the importance of considering benign diagnoses.

Keywords:

child abuse congenital disorders paediatrics

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Area of Science:

Pediatrics
Radiology
Neonatology

Background:

Non-accidental head injury is a serious concern in infant presentations with head trauma.
Differential diagnosis is crucial to avoid misinterpretation of findings.

Observation:

A 31-day-old female infant presented with a head injury, showing a left temporoparietal depression.
CT imaging revealed a concave depression of the left parietal bone.

Findings:

The infant was diagnosed with faulty fetal packing (congenital vault depression), a condition mimicking non-accidental injury.
The cranial defect showed significant resolution by 5 months of age.

Implications:

This case underscores the importance of considering congenital conditions in the differential diagnosis of infant head trauma.
Accurate diagnosis of congenital vault depression prevents unnecessary investigations and potential psychological distress for families.