Magnetic resonance imaging of a brain abscess in a 10‐month‐old filly

Audigié, Fabrice; Tapprest, Jackie; George, Celine; Didierlaurent, David; Foucher, N.; Faurie, F; Houssin, M; Denoix, Jean‐Marie

doi:10.1111/j.1740-8261.2004.04035.x

Cited by 44 publications

(46 citation statements)

References 20 publications

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“…6 Magnetic resonance images for the case described in the present report were strongly suggestive of a diagnosis of brain abscess. 1,7 Typically, mature abscesses have an isointense to hypointense core on T1-weighted images and an isointense to hyperintense core with a hypointense capsule on T2-weighted images. Abscesses containing semisolid material tend to be isointense, 7 which was the case for the abscesses in this cria.…”

Section: Discussionmentioning

confidence: 99%

“…1,7 Typically, mature abscesses have an isointense to hypointense core on T1-weighted images and an isointense to hyperintense core with a hypointense capsule on T2-weighted images. Abscesses containing semisolid material tend to be isointense, 7 which was the case for the abscesses in this cria. Formation of a capsule with accompanying neovascularization accounts for the ring enhancement of the lesion on T1-weighted images after administration of contrast medium.…”

Section: Discussionmentioning

confidence: 99%

“…2 In previous reports [5][6][7][8][9] of animals with intracranial abscesses, treatment with antimicrobials alone has been unsuccessful, even when antimicrobials with excellent tissue penetration have been used. The use of magnetic resonance imaging has enhanced the ability to diagnose and accurately localize intracranial abscesses prior to drainage or excision.…”

Section: Discussionmentioning

confidence: 99%

“…The use of magnetic resonance imaging has enhanced the ability to diagnose and accurately localize intracranial abscesses prior to drainage or excision. 7 Initially, excision was the treatment of choice for intracranial abscesses, but this has now largely been replaced with stereotactic aspiration, 3 whereby a needle or catheter is inserted via a craniotomy into the abscess for drainage. A similar approach has been used to successfully treat intracranial abscesses in horses.…”

Section: Discussionmentioning

confidence: 99%

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Diagnosis and surgical removal of brain abscesses in a juvenile alpaca

Talbot¹,

Mueller²,

Granger³

et al. 2007

javma

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A 1-month-old female alpaca weighing 15 kg (33 lb) was brought to the Queen' s Veterinary School hospital with a history of dullness, swaying, and head nodding that had become progressively worse over the previous week. The dam had been brought to the United Kingdom from Australia during the last month of pregnancy to join a herd of approximately 200. For 3 days following parturition, the cria was reportedly dull and maladjusted, but then became more responsive and suckled from the dam. Shortly after birth, the cria was given an injection of florfenicol-flunixin meglumine a (80 mg/kg [36 mg/lb], IM) by the referring veterinarian because of concerns about possible low-grade peritonitis.On initial examination, the cria remained in sternal recumbency with its head raised but swaying from side to side; signs of depression were evident. Rectal temperature was 37.3 o C (99.1 o F), pulse rate was 100 beats/min, and respiration rate was 32 breaths/min. Results of abdominal palpation and auscultation of the heart and lungs were unremarkable. The cria was reluctant to support its weight and had deficits in foot placement and hopping reactions in all 4 limbs. Flexor reflexes were normal in all 4 limbs, and strong patellar reflexes were present. Pupillary light reflexes and menace responses were normal. There was no evidence of pain associated with spinal palpation or manipulation. The abnormal mentation and involvement of all 4 limbs combined with an absence of cranial nerve deficits suggested a diffuse forebrain lesion or possible metabolic disorder. Case Description-A 1-month-old female alpaca was examined because of progressive clinical signs consistent with an intracranial lesion. Clinical Findings-Clinical signs included signs of depression, lethargy, tetraparesis, and neck weakness. Two large isointense intracranial masses could be seen on T1-weighted magnetic resonance images. On T2-weighted images, the masses contained concentric rings of hypointense and hyperintense material. Treatment and Outcome-2 abscesses were removed via a craniotomy that incorporated removal of the sagittal crest and surrounding skull and transection of the sagittal sinus. The bony deficit was replaced with polypropylene mesh. The alpaca recovered within 2 weeks and was fully integrated into the herd within 1 month after surgery. Clinical Relevance-Findings indicated that surgical removal is a feasible means of successfully treating intracranial abscesses in juvenile alpacas. (J Am Vet Med Assoc

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Diagnosis and surgical removal of brain abscesses in a juvenile alpaca

Talbot¹,

Mueller²,

Granger³

et al. 2007

javma

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“…MRI already has been proven successful in diagnosing brain masses in horses (Audigie et al 2004, Spoormakers et al 2003, Arencibia et al 2001, Westbrook and Kaut 1998 but there are no references to ependymomas in this species. Instead, Maulet et al (2008) described the MR appearance of cholesteatoma in the lateral ventricles of a horse.…”

Section: Discussionmentioning

confidence: 99%

Magnetic resonance imaging of an equine ependymoma

Leser¹,

Flatz²,

Brühschwein³

et al. 2013

PHK

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SummaryA 16-year-old Warmblood gelding was presented with head tilt and a history of increasing numbers of seizures with alterations in consciousness. After each seizure the horse was depressed and quiet whereas before the episodes the gelding was restless, distracted and showed signs of discomfort (chewing, rolling its eyes). In the interictal period the horse was normal. Magnetic resonance imaging revealed a third ventricle mass and ventriculomegaly of the third and lateral ventricles. Histology of the mass was consistent with a well differentiated ependymoma. Keywords Signalment, History, Clinical findingsA 16-year-old warmblood gelding was presented with a 1-year history of progressive changes in mentation and recurrent paroxysmal collapse since 4 weeks. On clinical examination vital parameters were within physiological range (heart rate 40/min, respiratory rate 16/min). Superficial abrasions were evident on the horses` hind limbs. On neurological examination, the gelding was depressed. The horse showed a normal gait while it revealed slight proprioceptive deficits and delayed limb placement correction. Cutaneus trunci reflex and slap test were normal. The horse displayed a mild head tilt to the left with absence of pathological nystagmus. Evaluation of the cranial nerves bilaterally revealed mid-sized nonresponsive pupils. Hence, pupillary light reflex could not be elicited while vision was not impaired. Tongue tone and cervical reflexes were physiological. Examination of tail carriage, anal tone and anal reflex revealed no abnormalities. An intracranial disease was suspected with involvement of the midbrain and reticular activating system. Laboratory examination of blood revealed no abnormal findings. As the owner wanted the diagnostics and treatment to be cost restrictive an attempt was made to rule out infectious or inflammatory conditions by administering drugs. The horse showed no improvement upon treatment with systemic antibiotics, steroids and non-steroidal antiinflammatory drugs. The owner finally elected euthanasia and consented to extended postmortem examinations. ImagingA post-mortem Magnetic Resonance Imaging (MRI) of the neurocranium was performed immediately after euthanasia and cervical transection. All scans were performed with a 1.5 Tesla magnet (Magnetom Symphony, Siemens Medizintechnik, Erlangen, Germany) equipped with a spine coil and CP body array flex coil. The head and cervical spine were placed in left lateral recumbency. Images of the head and brain were acquired with T2-weighted turbo spin-echo (T2W) sequences in sagittal, dorsal and transverse planes (TR 8810 msec; TE 105). A T1-weighted 3D gradient-echo (T1W) sequence with multiplanar reconstruction images in sagittal orientation was acquired (TR 350; TE 17). Scans were accomplished by additional Fluid Attenuated Inversion Recovery (FLAIR; TR 9130; TE 127; TI 2500) and a T2*-weighted gradient echo sequence (T2*W; TR 1000; TE 28) in transverse plane. Dorsal, transverse and sagittal images of the cranial cervical spine (C1-C4) we...

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Bacterial Infections of the Central Nervous System

Furr¹

2007

Equine Neurology

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Magnetic resonance imaging of a brain abscess in a 10‐month‐old filly

Cited by 44 publications

References 20 publications

Diagnosis and surgical removal of brain abscesses in a juvenile alpaca

Diagnosis and surgical removal of brain abscesses in a juvenile alpaca

Magnetic resonance imaging of an equine ependymoma

Bacterial Infections of the Central Nervous System

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