Congenital or acquired dehiscence of PA roof & localized herniation of floor of Meckel cave (MC)
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Alkhaibary A et al: Bilateral petrous apex cephaloceles: is surgical intervention indicated? Int J Surg Case Rep. 72:373-6, 2020
Warade AG et al: Petrous apex cephalocele presenting with cerebrospinal fluid rhinorrhea in an adult. J Clin Neurosci. 25:155-7, 2016
Boppel T et al: Excavating Meckel's cave: cavum-trigeminale-cephaloceles (CTCs). J Neuroradiol. 42(3):156-61, 2015
Jamjoom DZ et al: The association between petrous apex cephalocele and empty sella. Surg Radiol Anat. 37(10):1179-82, 2015
Çavusoglu M et al: Petrous apex cephalocoele: contribution of coexisting intracranial pathologies to the aetiopathogenesis. Br J Radiol. 88(1048):20140721, 2015
Hatipoğlu HG et al: Petrous apex cephalocele and empty sella/arachnoid cyst coexistence: a clue for cerebrospinal fluid pressure imbalance? Diagn Interv Radiol. 16(1):7-9, 2010
Stark TA et al: Dilation of the subarachnoid spaces surrounding the cranial nerves with petrous apex cephaloceles in Usher syndrome. AJNR Am J Neuroradiol. 30(2):434-6, 2009
Alorainy IA: Petrous apex cephalocele and empty sella: is there any relation? Eur J Radiol. 62(3):378-84, 2007
Leonetti JP et al: Incidental petrous apex findings on magnetic resonance imaging. Ear Nose Throat J. 80(4):200-2, 205-6, 2001
Moore KR et al: Petrous apex cephaloceles. AJNR Am J Neuroradiol. 22(10):1867-71, 2001
Vergoni G et al: Spontaneous cerebrospinal fluid rhinorrhoea in anteromedial temporal occult encephalocele. Br J Neurosurg. 15(2):156-8, 2001
Cheung SW et al: Petrous apex arachnoid cyst: radiographic confusion with primary cholesteatoma. Am J Otol. 16(5):690-4, 1995
Beaumont GD et al: Encephalocoele involving the petrous bone. Neuroradiology. 32(6):533-4, 1990
Related Anatomy
Loading...
Related Differential Diagnoses
Loading...
References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
Petrous apex (PA) cephalocele (PAC)
Synonyms
PA arachnoid cyst, cavum trigeminale cephalocele
Definitions
Congenital or acquired dehiscence of PA roof & localized herniation of floor of Meckel cave (MC)
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Alkhaibary A et al: Bilateral petrous apex cephaloceles: is surgical intervention indicated? Int J Surg Case Rep. 72:373-6, 2020
Warade AG et al: Petrous apex cephalocele presenting with cerebrospinal fluid rhinorrhea in an adult. J Clin Neurosci. 25:155-7, 2016
Boppel T et al: Excavating Meckel's cave: cavum-trigeminale-cephaloceles (CTCs). J Neuroradiol. 42(3):156-61, 2015
Jamjoom DZ et al: The association between petrous apex cephalocele and empty sella. Surg Radiol Anat. 37(10):1179-82, 2015
Çavusoglu M et al: Petrous apex cephalocoele: contribution of coexisting intracranial pathologies to the aetiopathogenesis. Br J Radiol. 88(1048):20140721, 2015
Hatipoğlu HG et al: Petrous apex cephalocele and empty sella/arachnoid cyst coexistence: a clue for cerebrospinal fluid pressure imbalance? Diagn Interv Radiol. 16(1):7-9, 2010
Stark TA et al: Dilation of the subarachnoid spaces surrounding the cranial nerves with petrous apex cephaloceles in Usher syndrome. AJNR Am J Neuroradiol. 30(2):434-6, 2009
Alorainy IA: Petrous apex cephalocele and empty sella: is there any relation? Eur J Radiol. 62(3):378-84, 2007
Leonetti JP et al: Incidental petrous apex findings on magnetic resonance imaging. Ear Nose Throat J. 80(4):200-2, 205-6, 2001
Moore KR et al: Petrous apex cephaloceles. AJNR Am J Neuroradiol. 22(10):1867-71, 2001
Vergoni G et al: Spontaneous cerebrospinal fluid rhinorrhoea in anteromedial temporal occult encephalocele. Br J Neurosurg. 15(2):156-8, 2001
Cheung SW et al: Petrous apex arachnoid cyst: radiographic confusion with primary cholesteatoma. Am J Otol. 16(5):690-4, 1995
Beaumont GD et al: Encephalocoele involving the petrous bone. Neuroradiology. 32(6):533-4, 1990
STATdx includes over 200,000 searchable images, including x-ray, CT, MR, and ultrasound images. To access all images, please log in or subscribe.