• 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

5 month old Shih Tzu

February 12, 2015 By Allison Zwingenberger

Today’s case is a 5 month old female Shih Tzu with a heart murmur. What is your top differential diagnosis?

R LAT Thorax
L LAT Thorax
DV Thorax

Show findings...

Findings

The cardiac silhouette is moderately enlarged, with a bulge in the region of the main pulmonary artery on the dorsoventral projection. There is a vascular pattern with diffusely enlarged pulmonary vasculature throughout the pulmonary parenchyma. No other abnormalities are noted in the pleural space, mediastinum, or musculoskeletal structures. The portion of the abdomen included is normal.

Show diagnosis…

Diagnosis

Congenital cardiac anomaly – patent ductus arteriosus.

Show discussion…

Discussion

The vascular pattern and cardiac enlargement indicate a left to right shunt, and the bulge in the main pulmonary artery is characteristic of a PDA. Because of the dog’s small size (1.6 kg), coiling was not an option. The PDA was surgically ligated successfully.

Filed Under: Canine, Case of the Day, Radiographs, Thorax

Comments

  1. bruceduncan says

    February 12, 2015 at 2:06 pm

    It is clear to me that the heart is moderately enlarged and that there is a bulge in the pulmonary artery, but it also looks to me as though there is some left atrial tenting, is this the case?

  2. Charlierak says

    February 14, 2015 at 10:37 pm

    This may not be an answer that you are looking for. In a case of the left atrial tenting, should we see some elevation of the left main-stem bronchus on lateral projection with bowed main-stem bronchi on DV view?

  • 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