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Fossa navicularis magna

A Beltramello1, G Puppini, G El-Dalati

  • 1Institute of Radiology, University of Verona, Italy.

AJNR. American Journal of Neuroradiology
|November 5, 1998
PubMed
Summary
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A rare notchlike bone defect in the skull base was found incidentally. This anatomical variant, filled with lymphoid tissue, is discussed with historical context.

Area of Science:

  • Anatomy
  • Radiology
  • Pathology

Background:

  • Anatomical variations in the skull base can present diagnostic challenges.
  • The fossa navicularis is a known anatomical landmark in the basiocciput.

Observation:

  • A notchlike osseous defect was identified in the basiocciput.
  • The defect was associated with a prominent fossa navicularis.
  • Magnetic Resonance (MR) imaging revealed lymphoid tissue within the defect.

Findings:

  • The defect was filled with lymphoid tissue originating from the pharyngeal tonsil.
  • This represents an unusual anatomical variant.
  • The finding was incidental during evaluation for sinusitis.

Implications:

Related Experiment Videos

  • Understanding such anatomical variants is crucial for accurate radiological diagnosis.
  • This finding may be relevant in the context of congenital anatomical variations.
  • Discussion references historical anatomical texts, providing evolutionary context.