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DOI:10.2214/AJR.07.3131
AJR 2008; 190:1691-1696
© American Roentgen Ray Society

Clinical Observations

Arrested Pneumatization of the Skull Base: Imaging Characteristics

Kirk M. Welker1, David R. DeLone1, John I. Lane1 and Julie R. Gilbertson1

1 Department of Radiology, Division of Neuroradiology, Mayo Clinic, 200 First St. SW, Rochester, MN 55905.

OBJECTIVE. Arrested skull base pneumatization is a benign developmental variant that can be confused with significant skull base disease processes. This study reviews the imaging findings in 30 suspected cases of arrested skull base pneumatization.

CONCLUSION. When encountering a nonexpansile lesion with osteosclerotic borders, internal fat, and curvilinear calcifications in the basisphenoid bone or adjacent skull base, radiologists should strongly consider the diagnosis of arrested pneumatization.

Keywords: arrested pneumatization • congenital anomalies • craniofacial lesions • head and neck imaging • skull base • sphenoid sinus


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