PT - JOURNAL ARTICLE AU - Tchoyoson Lim, C. C. AU - Dillon, William P. AU - McDermott, Michael W. TI - Mucocele Involving the Anterior Clinoid Process: MR and CT Findings DP - 1999 Feb 01 TA - American Journal of Neuroradiology PG - 287--290 VI - 20 IP - 2 4099 - http://www.ajnr.org/content/20/2/287.short 4100 - http://www.ajnr.org/content/20/2/287.full SO - Am. J. Neuroradiol.1999 Feb 01; 20 AB - Summary: We report two patients with surgically proved mucoceles involving the anterior clinoid process. One patient had a mucocele of an Onodi cell and the other had a mucocele isolated to the anterior clinoid process. The MR signal was increased on both T1- and T2-weighted images in the first patient but was isointense on both sequences in the second patient, a finding that resulted in misdiagnosis. The developmental and anatomic features, as well as the diagnostic pitfalls, are discussed.