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Hypertrophic olivary degeneration secondary to central tegmental tract injury.

Araujo NA, Raeder MT, da Silva Junior NA, Oshima MM, Parizotto LO, Reis F - Radiol Bras (2015 May-Jun)

View Article: PubMed Central - PubMed

Affiliation: Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil.

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the alterations are restricted to the central tegmentar tract, the HOD is ipsilateral, like In cases where there is involvement of the dentate nucleus or of the dentate nucleus or superior cerebellar peduncle, the HOD is contralateral... cerebellar peduncle and the contralateral central tegmentar tract, or in case of compromise anterolateral portion of the bulb, in the olivary region, associated with increase in the volume of such a structure that does not present contrast enhancement... Additionally, the volumetric reduction of the cerebellar hemisphere contralateral to the olivary alteration HOD occurs as a result of a range of insults... The symptoms are classically associated with Macroscopic findings reveal hypertrophy instead of olivary atrophy, which is a of both neurons (due to proliferation of neurofilaments and cytoplasmic vacuolization) and glial cells.

No MeSH data available.


MRI of the brain. Axial, T2-weighted FFE image at the level of the bulb(A) and axial T2-weighted image (B) shows hypersignal inthe region of the left inferior olivary nucleus, as well as accentuation of sulci inthe right cerebellar hemisphere. Susceptibility-weighted imaging (C) atthe level of the pons shows lesion with peripheral hyposignal in the pontinetegmentum (left facial colliculus), compatible with hemorrhagic focus.
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f01: MRI of the brain. Axial, T2-weighted FFE image at the level of the bulb(A) and axial T2-weighted image (B) shows hypersignal inthe region of the left inferior olivary nucleus, as well as accentuation of sulci inthe right cerebellar hemisphere. Susceptibility-weighted imaging (C) atthe level of the pons shows lesion with peripheral hyposignal in the pontinetegmentum (left facial colliculus), compatible with hemorrhagic focus.

Mentions: A male, 30-year-old patient presenting with a sudden-onset convergent squint attended theservice complaining of diplopia. At physical examination the patient presented compromiseof the left VI nerve and palatal myoclonus. Magnetic resonance imaging (Figure 1) demonstrated hypertrophic olivary degeneration(HOD) secondary to central tegmental tract injury.


Hypertrophic olivary degeneration secondary to central tegmental tract injury.

Araujo NA, Raeder MT, da Silva Junior NA, Oshima MM, Parizotto LO, Reis F - Radiol Bras (2015 May-Jun)

MRI of the brain. Axial, T2-weighted FFE image at the level of the bulb(A) and axial T2-weighted image (B) shows hypersignal inthe region of the left inferior olivary nucleus, as well as accentuation of sulci inthe right cerebellar hemisphere. Susceptibility-weighted imaging (C) atthe level of the pons shows lesion with peripheral hyposignal in the pontinetegmentum (left facial colliculus), compatible with hemorrhagic focus.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4492577&req=5

f01: MRI of the brain. Axial, T2-weighted FFE image at the level of the bulb(A) and axial T2-weighted image (B) shows hypersignal inthe region of the left inferior olivary nucleus, as well as accentuation of sulci inthe right cerebellar hemisphere. Susceptibility-weighted imaging (C) atthe level of the pons shows lesion with peripheral hyposignal in the pontinetegmentum (left facial colliculus), compatible with hemorrhagic focus.
Mentions: A male, 30-year-old patient presenting with a sudden-onset convergent squint attended theservice complaining of diplopia. At physical examination the patient presented compromiseof the left VI nerve and palatal myoclonus. Magnetic resonance imaging (Figure 1) demonstrated hypertrophic olivary degeneration(HOD) secondary to central tegmental tract injury.

View Article: PubMed Central - PubMed

Affiliation: Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil.

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

the alterations are restricted to the central tegmentar tract, the HOD is ipsilateral, like In cases where there is involvement of the dentate nucleus or of the dentate nucleus or superior cerebellar peduncle, the HOD is contralateral... cerebellar peduncle and the contralateral central tegmentar tract, or in case of compromise anterolateral portion of the bulb, in the olivary region, associated with increase in the volume of such a structure that does not present contrast enhancement... Additionally, the volumetric reduction of the cerebellar hemisphere contralateral to the olivary alteration HOD occurs as a result of a range of insults... The symptoms are classically associated with Macroscopic findings reveal hypertrophy instead of olivary atrophy, which is a of both neurons (due to proliferation of neurofilaments and cytoplasmic vacuolization) and glial cells.

No MeSH data available.