MR imaging of facial nerve enhancement in Bell palsy or after temporal bone surgery.

Daniels, David L.; Czervionke, Leo F.; Millen, Steven J.; Haberkamp, Thomas J.; Meyer, G A; Hendrix, L E; Mark, Leighton P.; Williams, A L; Haughton, V M

doi:10.1148/radiology.171.3.2717756

Cited by 65 publications

(28 citation statements)

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“…Although many studies of the anatomy and pathology of the 7th cranial nerve using gadolinium-enhanced magnetic resonance imaging (MRI) have already been published [6][7][8][9][10][11], only scattered cases of HZO have been described, and generally only the MRI appearance of the soft temporal bone structures has been reported [11][12][13][14][15][16].…”

Section: Herpes Zoster Oticus: Correlations Between Clinical and Mri mentioning

confidence: 99%

Herpes zoster oticus: Correlations between Clinical and MRI Findings

Berrettini

Bianchi²,

Segnini³

et al. 1998

Eur Neurol

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Many gadolinium-enhanced magnetic resonance imaging (MRI) studies focusing on the anatomy and pathology of the 7th cranial nerve have already been published. However, only scattered cases of herpes zoster oticus (HZO) have been described and only the MRI appearance of the soft temporal bone structures has been reported. Enhanced MRI was performed in 4 patients with HZO observed at the Department of Otorhinolaryngology of the University of Pisa. A good correlation was found between the clinical data and MRI findings in both the acute and chronic stages of the disease. The 2 cases with complete facial palsy presented prominent and diffuse enhancement of the 7th and 8th cranial nerves on postcontrast MRI, while the patient with grade III facial palsy showed more limited nerve enhancement. The patient with grade II facial palsy presented no MRI abnormalities. In our series, enhancement limited to the geniculate ganglion and to the labyrinthine segment of the facial nerve indicates a good prognosis while a widespread enhancement correlates with a poor prognosis. In conclusion, MRI with contrast may be useful during the acute stage of HZO because it can confirm the diagnosis and can provide prognostic information on the facial function.

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Section: Herpes Zoster Oticus: Correlations Between Clinical and Mri mentioning

confidence: 99%

Herpes zoster oticus: Correlations between Clinical and MRI Findings

Berrettini

Bianchi²,

Segnini³

et al. 1998

Eur Neurol

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“…Therefore, enhancement in the FN most reliably reflects an inflammation in the meatal and labyrinthine segments. In 7 of the studies [15,16,18,20,[23][24][25], enhancement occurred in the meatal FN segment in the majority of the patients with IFP. All 11 series reported enhancement in the meatal FN.…”

Section: Mri Studiesmentioning

confidence: 95%

“…(3) Eleven published studies [15][16][17][18][19][20][21][22][23][24][25] describing the use of MRI in IFP were reviewed comparing the location of enhancement in the FN during the disorder. These studies included patients who were monitored within 7 days as well as several weeks to months following the onset of paralysis.…”

Section: Methodsmentioning

confidence: 99%

“…Atrophy of the stria vascularis was present in the middle and upper basal turns. Gacek/Gacek Table 1 lists 11 MRI studies of the FN in IFP reported from the years 1989-1997 [15][16][17][18][19][20][21][22][23][24][25]. These studies are representative of the FN imaging studies dealing with IFP likely caused by herpes simplex I and varicella zoster virus.…”

Section: Tb In a Case Of Ifpmentioning

confidence: 99%

“…Numerous reports on the use of FN MRI after injection of gadolinium diethylenetriaminepentacetic acid (DTPA) in patients with IFP described enhancement of the proximal FN (meatal and labyrinthine), especially the meatal segment, which eventually diminishes, as FN function recovers [15][16][17][18][19][20][21][22][23][24][25][26]. Most of these reports draw the conclusion that the focus of enhancement unique to IFP is located in the meatal FN corroborating the observation of Fisch and Esslen [14].…”

Section: Introductionmentioning

confidence: 99%

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Meatal Ganglionitis: Clinical Pathologic Correlation in Idiopathic Facial Paralysis (Bell’s Palsy)

Gacek¹,

Gacek²

1999

Otorhinolaryngol Nova

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Hypothesis: Present evidence which supports the concept that inflammation of the facial nerve (FN) meatal ganglion (MG) is the site of virus accumulation in idiopathic facial paralysis (IFP). Materials and Methods: Four bodies of evidence are used to support the hypothesis. (1) A case report of a 51-year-old female with left IFP is representative of a series with 5 patients who were monitored with MRI. Sequential MRI of the FN at 1, 8 and 15 weeks after onset of IFP monitored the inflammatory process in the FN. (2) A human temporal bone (TB) taken from an 81-year-old female who recovered from IFP 3 years before death was examined in the light microscope. (3) Eleven reports of MRI in patients with IFP were reviewed. (4) The data from 2 human TB studies describing the MG in normal and abnormal FN are summarized. Results: (1) The MRI of the FN in the majority of imaging reports of patients with IFP demonstrated enhancement of the meatal segment of the FN as the earliest focus in IFP. (2) The meatal FN segment was the earliest site of enhancement in our series of 5 patients with IFP. (3) The TB from the patient who recovered from IFP demonstrated degenerated cells in the MG and degeneration of vestibular neurons innervating cristae. (4) TB studies describe the occurrence of the MG in human FN. In the majority of FN (80%), the MG is represented by a smaller ganglion than the geniculate one. However, the MG equals or exceeds in size the geniculate ganglion in 20% of TB. A second TB study demonstrated ganglion cell lesions consistent with virally induced pathology in the MG and vestibular nerve (and ganglion) in a high percentage of TB. Conclusions: Clinical, radiologic and anatomical evidence supports meatal ganglionitis as a pathologic correlate in IFP.

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Temporal Lobe Injury in Temporal Bone Fractures

Jones¹,

Rothman²,

Gray³

et al. 2000

Arch Otolaryngol Head Neck Surg

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While high-resolution CT remains the criterion standard for evaluation of temporal bone fractures, MRI revealed a higher incidence of related temporal lobe injuries. Magnetic resonance imaging data may be valuable in preoperative evaluation of patients who require surgical intervention through a middle cranial fossa approach to document pre-existing injury and potential morbidity before retraction of the middle cranial fossa dura mater and temporal lobe.

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MR imaging of facial nerve enhancement in Bell palsy or after temporal bone surgery.

Cited by 65 publications

References 0 publications

Herpes zoster oticus: Correlations between Clinical and MRI Findings

Herpes zoster oticus: Correlations between Clinical and MRI Findings

Meatal Ganglionitis: Clinical Pathologic Correlation in Idiopathic Facial Paralysis (Bell’s Palsy)

Temporal Lobe Injury in Temporal Bone Fractures

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