Nonunited ossification center of the presphenoid bone: Pseudomeningioma

L. M. Ratner, R. M. Quencer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Three patients are described; in two of them initial plain skull films at an outside institution were interpreted as demonstrating an anterior clinoid meningioma. Evaluation of these films along with a further study of the skull base with complex motion tomography demonstrated a separate and well corticated bony structure posterior and superior to each anterior clinoid in all three cases. After review of the developmental anatomy of this region, it was concluded that these bone centers represent failure of the posterior accessory centers of the presphenoid to fuse with the orbitosphenoid. The features of these nonunited centers appear to be characteristic and should allow distinction of this developmental anomaly from a pathologic process.

Original languageEnglish (US)
Pages (from-to)503-506
Number of pages4
JournalAmerican Journal of Roentgenology
Issue number3
StatePublished - 1983

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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