Lipoma in cerebellopontine angle (CPA)-internal auditory canal (IAC): Nonneoplastic mass of adipose tissue in CPA-IAC area
Congenital malformation; not true neoplasm
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Uysal E et al: Internal auditory canal lipoma: an unusual intracranial lesion. World Neurosurg. 135:156-9, 2020
Bacciu A et al: Lipomas of the internal auditory canal and cerebellopontine angle. Ann Otol Rhinol Laryngol. 123(1):58-64, 2014
Filli L et al: Symptomatic lipoma of the internal auditory canal: CT and MRI findings. a case report. Neuroradiol J. 27(4):479-81, 2014
White JR et al: Lipomas of the cerebellopontine angle and internal auditory canal: Primum Non Nocere. Laryngoscope. 123(6):1531-6, 2013
Mukherjee P et al: Intracranial lipomas affecting the cerebellopontine angle and internal auditory canal: a case series. Otol Neurotol. 32(4):670-5, 2011
Vernooij MW et al: Intravestibular lipoma: an important imaging diagnosis. Arch Otolaryngol Head Neck Surg. 134(11):1225-8, 2008
Sade B et al: Cerebellopontine angle lipoma presenting with hemifacial spasm: case report and review of the literature. J Otolaryngol. 34(4):270-3, 2005
Gaskin CM et al: Lipomas, lipoma variants, and well-differentiated liposarcomas (atypical lipomas): results of MRI evaluations of 126 consecutive fatty masses. AJR Am J Roentgenol. 182(3):733-9, 2004
Dahlen RT et al: CT and MR imaging characteristics of intravestibular lipoma. AJNR Am J Neuroradiol. 23(8):1413-7, 2002
Tankéré F et al: Cerebellopontine angle lipomas: report of four cases and review of the literature. Neurosurgery. 50(3):626-31; discussion 631-2, 2002
Singh SP et al: Lipomas of the internal auditory canal. Arch Pathol Lab Med. 120(7):681-3, 1996
Kato T et al: Trigeminal neuralgia caused by a cerebellopontine-angle lipoma: case report. Surg Neurol. 44(1):33-5, 1995
Truwit CL et al: Pathogenesis of intracranial lipoma: an MR study in 42 patients. AJR Am J Roentgenol. 155(4):855-64; discussion 865, 1990
Maiuri F et al: Intracranial lipomas. Diagnostic and therapeutic considerations. J Neurosurg Sci. 32(4):161-7, 1988
Leibrock LG et al: Cerebellopontine angle lipoma: a review. Neurosurgery. 12(6):697-9, 1983
Related Anatomy
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
TERMINOLOGY
Synonyms
Congenital lipoma, lipomatous hamartoma
Definitions
Lipoma in cerebellopontine angle (CPA)-internal auditory canal (IAC): Nonneoplastic mass of adipose tissue in CPA-IAC area
Congenital malformation; not true neoplasm
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Uysal E et al: Internal auditory canal lipoma: an unusual intracranial lesion. World Neurosurg. 135:156-9, 2020
Bacciu A et al: Lipomas of the internal auditory canal and cerebellopontine angle. Ann Otol Rhinol Laryngol. 123(1):58-64, 2014
Filli L et al: Symptomatic lipoma of the internal auditory canal: CT and MRI findings. a case report. Neuroradiol J. 27(4):479-81, 2014
White JR et al: Lipomas of the cerebellopontine angle and internal auditory canal: Primum Non Nocere. Laryngoscope. 123(6):1531-6, 2013
Mukherjee P et al: Intracranial lipomas affecting the cerebellopontine angle and internal auditory canal: a case series. Otol Neurotol. 32(4):670-5, 2011
Vernooij MW et al: Intravestibular lipoma: an important imaging diagnosis. Arch Otolaryngol Head Neck Surg. 134(11):1225-8, 2008
Sade B et al: Cerebellopontine angle lipoma presenting with hemifacial spasm: case report and review of the literature. J Otolaryngol. 34(4):270-3, 2005
Gaskin CM et al: Lipomas, lipoma variants, and well-differentiated liposarcomas (atypical lipomas): results of MRI evaluations of 126 consecutive fatty masses. AJR Am J Roentgenol. 182(3):733-9, 2004
Dahlen RT et al: CT and MR imaging characteristics of intravestibular lipoma. AJNR Am J Neuroradiol. 23(8):1413-7, 2002
Tankéré F et al: Cerebellopontine angle lipomas: report of four cases and review of the literature. Neurosurgery. 50(3):626-31; discussion 631-2, 2002
Singh SP et al: Lipomas of the internal auditory canal. Arch Pathol Lab Med. 120(7):681-3, 1996
Kato T et al: Trigeminal neuralgia caused by a cerebellopontine-angle lipoma: case report. Surg Neurol. 44(1):33-5, 1995
Truwit CL et al: Pathogenesis of intracranial lipoma: an MR study in 42 patients. AJR Am J Roentgenol. 155(4):855-64; discussion 865, 1990
Maiuri F et al: Intracranial lipomas. Diagnostic and therapeutic considerations. J Neurosurg Sci. 32(4):161-7, 1988