A case of bilateral thinning of the cranial bones in an elderly individual

Background

Bilateral thinning of the parietal bone is a condition that has been known since the 18th century, with several names being given since its discovery. The aetiology is unknown but there are numerous theories. Although this condition is rarely encountered, its clinical significance may be relevant to traumatic cases.

Objectives

This study aims to present a case of bilateral thinning observed in the cranium of an 87-year elderly female, which was assessed macroscopically and radiologically to visualize the exact parameters of the thinned areas to discuss a plausible cause and aetiology of the condition.

Methods

During maceration for teaching purposes, the cranium was removed and assessed macroscopically. A micro-CT was then taken to determine the exact size and cranial thickness of the lesions.

Results

A differential diagnosis was established which included an unknown aetiology or Gorham-Stout disease. In addition, it was noted that metabolic factors, such as malnutrition and metabolic acidosis, should be considered as factors for increasing its severity.

Conclusion

Case studies on the presence of bilateral thinning of the parietal bones has been reported in various countries, while no case studies could be found reporting the presence of bilateral thinning on both the parietal and occipital bones. The combination of thinning reported in this study may suggest increased severity of a more advanced state of the condition.