Mastoid effusion on temporal bone MRI in patients with Bell’s palsy and Ramsay Hunt syndrome

Choi, Jin Woo; Lee, Jiyeon.; Lee, Dong−Han; Shin, Jung Eun; Kim, Chang-Hee

doi:10.1038/s41598-021-82984-w

Cited by 6 publications

(7 citation statements)

References 41 publications

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“…Facial nerve hemangiomas can also arise in the geniculate ganglion; however, these can be differentiated from FNS as they have irregular borders on HRCT and a “honeycomb” appearance, while FNS have a smooth well-defined border [8 , 18 , 20 , 33] . Bell's palsy is able to show postcontrast T1 enhancement of the geniculate ganglion and facial nerve segments, but is differentiated from a FNS due to the quicker onset and potential for spontaneous resolution of symptoms [34] . Congenital cholesteatomas can also affect the facial nerve intratemporally; however, they do not enhance with contrast on MRI, whereas FNS do [14 , 18 , 20] .…”

Section: Discussionmentioning

confidence: 99%

Facial nerve schwannoma: Case report and brief review of the literature

Libell,

Balar,

Libell

et al. 2023

Radiology Case Reports

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Section: Discussionmentioning

confidence: 99%

Facial nerve schwannoma: Case report and brief review of the literature

Libell,

Balar,

Libell

et al. 2023

Radiology Case Reports

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“…Bell's palsy usually shows homogeneous enhancement of the facial nerve on postcontrast T1WI (Figure 18), particularly in segments medial to the geniculate ganglion, and/or asymmetric enhancement in the geniculate and lateral segments, where enhancement per se may be a normal finding 65 . There is a recent report that Bell's palsy has a higher incidence of mastoid fluid retention on MRI than Ramsey‐Hunt syndrome, which may be an additional finding in differentiating the two entities 66 …”

Section: Temporal Bone/skull Basementioning

confidence: 99%

“…65 There is a recent report that Bell's palsy has a higher incidence of mastoid fluid retention on MRI than Ramsey-Hunt syndrome, which may be an additional finding in differentiating the two entities. 66…”

Section: Facial Neuropathiesmentioning

confidence: 99%

Advanced imaging of head and neck infections

Baba

Kurokawa

et al. 2023

Journal of Neuroimaging

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When head and neck infection is suspected, appropriate imaging contributes to treatment decisions and prognosis. While contrast‐enhanced CT is the standard imaging modality for evaluating head and neck infections, MRI can better characterize the skull base, intracranial involvement, and osteomyelitis, implying that these are complementary techniques for a comprehensive assessment. Both CT and MRI are useful in the evaluation of abscesses and thrombophlebitis, while MRI is especially useful in the evaluation of intracranial inflammatory spread/abscess formation, differentiation of abscess from other conditions, evaluation of the presence and activity of inflammation and osteomyelitis, evaluation of mastoid extension in middle ear cholesteatoma, and evaluation of facial neuritis and labyrinthitis. Apparent diffusion coefficient derived from diffusion‐weighted imaging is useful for differential diagnosis and treatment response of head and neck infections in various anatomical sites. Dynamic contrast‐enhanced MRI perfusion may be useful in assessing the activity of skull base osteomyelitis. MR bone imaging may be of additional value in evaluating bony structures of the skull base and jaw. Dual‐energy CT is helpful in reducing metal artifacts, evaluating deep neck abscess, and detecting salivary stones. Subtraction CT techniques are used to detect progressive bone‐destructive changes and to reduce dental amalgam artifacts. This article provides a region‐based approach to the imaging evaluation of head and neck infections, using both conventional and advanced imaging techniques.

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“…Furthermore, MRI can help to differentiate between Bell's palsy of the peripheral facial nerve and RHS. Early diagnosis is crucial to support rapid initiation of a combination therapy with systemic steroids and antiviral agents [92].…”

Section: Ramsay Hunt Syndromementioning

confidence: 99%

Imaging of Pathologies of the Temporal Bone and Middle Ear: Inflammatory Diseases, Their Mimics and Potential Complications—Pictorial Review

Kloth,

Beck,

Sollmann

et al. 2023

Tomography

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Imaging of the temporal bone and middle ear is challenging for radiologists due to the abundance of distinct anatomical structures and the plethora of possible pathologies. The basis for a precise diagnosis is knowledge of the underlying anatomy as well as the clinical presentation and the individual patient’s otological status. In this article, we aimed to summarize the most common inflammatory lesions of the temporal bone and middle ear, describe their specific imaging characteristics, and highlight their differential diagnoses. First, we introduce anatomical and imaging fundamentals. Additionally, a point-to-point comparison of the radiological and histological features of the wide spectrum of inflammatory diseases of the temporal bone and middle ear in context with a review of the current literature and current trends is given.

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Mastoid effusion on temporal bone MRI in patients with Bell’s palsy and Ramsay Hunt syndrome

Cited by 6 publications

References 41 publications

Facial nerve schwannoma: Case report and brief review of the literature

Facial nerve schwannoma: Case report and brief review of the literature

Advanced imaging of head and neck infections

Imaging of Pathologies of the Temporal Bone and Middle Ear: Inflammatory Diseases, Their Mimics and Potential Complications—Pictorial Review

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