• Home
  • About
  • Articles
  • Books
  • Contact

Veterinary Radiology

Teaching and learning about veterinary diagnostic imaging.

  • Modality
    • Radiographs
    • Ultrasound
    • CT/MRI
  • Region
    • Thorax
    • Abdomen
    • Musculoskeletal
    • Neurologic
  • Species
    • Canine
    • Feline
    • Equine
    • Exotic

Multiple episodes of hemorrhage on MR

April 6, 2007 By Allison Zwingenberger

At tonight’s KCC, we saw some great cases from the clinic this week. One of them was a 7 year old MN Vizsla with a history of inappetance, ataxia and fever. He had an MR performed, which showed multifocal areas of abnormality. There were lesions in the right cerebrum, left frontal lobe, and left cerebellum. All of the lesions had a component of hyperintensity on T1 and T2 weighted images. They were intra-axial, and the largest one in the cerebellum had both hyperintense and hypointense components. The large lesion was causing a mass effect with displacement of the brainstem and midline shift.

The cerebellar lesion showed rim enhancement with gadolinium, and had an “onionskin” appearance on T2 and Flair images. There was also edema surrounding this lesion on both sequences.

Differential diagnoses for an asymmetric, multifocal disease included metastatic neoplasia, infarction, granulomatous disease, or septic emboli such as in endocarditis. There was a definite hemorrhagic component because of the hyperintensity on T1 and T2 images.

The interesting point that came out was that the “onionskin” appearance usually means multiple episodes of hemorrhage have occured at different times. The intensity of the blood changes over time as it is transformed to different metabolites.

This animal had disseminated hemangiosarcoma, including the right atrium, lung and multiple abdominal organs.

Filed Under: Known Case Conference, MR

Comments

  1. mariopingryhospital says

    October 1, 2011 at 5:44 am

    great! the T1 hyperintensity is helpful when ther is a suspect of haemorrage. I have problems when an intraxial, contrast enhanced (ring or full), space occuping lesion (with perilesional edema) not shows T1 hyperintensity. Until now I have not yet managed to get a susceptibility artifact on Gradient Echo for an haemorragic lesion with my LF-MRI. what kind of magnet you own? and what is your experience with Gradient Echo for hemorrage (sensitivity)?

  2. Allison Zwingenberger says

    October 1, 2011 at 8:27 am

    I find that with our 1.5T magnet, susceptibility artifact is usually quite easy to see even with small amounts of hemorrhage.

  3. mariopingryhospital says

    October 1, 2011 at 8:42 am

    even with small amounts??! that’s cool! I go out immediately to buy one. 🙂

  • Bloglovin
  • Facebook
  • RSS
  • Twitter
AtlasCover787x1024 amazon-availablenow

Veterinary Radiology News

Sign up for alerts about new cases and newsletters.

We will respect your privacy.

Archives

Recent Comments

Tags

abscess adenocarcinoma bronchiectasis carcinoma cardiomyopathy coccidioidomycosis discospondylitis elbow dysplasia eosinophilic bronchopneumopathy erosive polyarthritis feline infectious peritonitis FIP foreign body fracture gastric dilation gastric foreign body gastrointestinal GDV heart failure hemangiosarcoma hiatal hernia histiocytic sarcoma hypertrophic cardiomyopathy intestinal foreign body linear foreign body lymphoma megaesophagus osteochondrosis osteomyelitis osteosarcoma patent ductus arteriosus PDA pericardial effusion pneumonia pneumothorax polyarthritis PPDH pulmonary pulmonary abscess pulmonary adenocarcinoma pulmonary carcinoma sarcoma thymoma tracheal collapse vascular ring anomaly

Copyright © 2025 · Metro Pro Theme On Genesis Framework · WordPress · Log in