'Don't touch me' lesions of the petrous apex.Asymmetric fatty marrow and trapped fluid in air cells of the petrous petrous /pet·rous/ (pet´rus) resembling a rock; hard; stony. pet·rous adj. 1. Of stony hardness. 2. apex, which are usually identified as incidental findings on magnetic resonance can be unrelated to the clinical signs and symptoms and should be left untouched. These incidental findings can lead to uncertainty on the part of the referring clinician and/or radiologist because they can be confused with pathologic lesions. Asymmetric fatty marrow in the petrous apex and petrous air cell effusions both have characteristic MRI 1. (application) MRI - Magnetic Resonance Imaging. 2. MRI - Measurement Requirements and Interface. features that facilitate their correct diagnosis (figures 1 and 2). Effusions can be mistaken for a cholesterol granuloma granuloma /gran·u·lo·ma/ (gran?u-lo´mah) pl. granulomas, granulo´mata an imprecise term for (1) any small nodular delimited aggregation of mononuclear inflammatory cells, or (2) such a collection of modified macrophages and petrositis, and asymmetric fatty marrow can be mistaken for a cholesteatoma. [1] In these cases, when clinically justified, followup computed tomography or MRI study will confirm the stability. From the Department of Radiology, Louisiana State University Louisiana State University and Agricultural and Mechanical College, generally known as Louisiana State University or LSU, is a public, coeducational university located in Baton Rouge, Louisiana and the main campus of the Louisiana State University System. Health Science Center, New Orleans (Dr. Palacios and Dr. D'Antonio), and the Department of Radiology and Otolaryngology, University of Illinois University of Illinois may refer to:
Reference (1.) Moore KR, Harnsberger HR, Shelton C, Davidson HC. "Leave me alone" lesions of the petrous apex. AJNR Am J Neuroradiol 1998;19:733-8, |
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