Articles by Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

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Articles by Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

Weighing the evidence: Is it a benign or malignant bone lesion?

Aug 1, 2009
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

An owner brings an 8-year-old female, neutered Australian Shepherd with acute right forelimb lameness to your office.

How to ultrasound and evaluate the thyroid and parathyroid glands

Feb 1, 2009
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

One of the strengths of ultrasound imaging is its ability to resolve very small soft-tissue structures.

Is it megaesophagus or a normal variation?

Aug 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

Megaesophagus is a condition in which the esophagus has reduced peristalsis, and has poor tone at rest. The esophagus can have a mild, focal motility problem, or the entire organ may be dilated and functioning poorly.

Diagnostic Imaging: The subtleties in identifying a bronchial pattern

Jun 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

A bronchial pattern on radiographs indicates pathology involving the airways. It can be a subtle pattern to recognize, so let's look at some of the features.

Diagnostic Imaging: Ultrasound of cats with chronic renal disease not always black and white

Apr 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

Chronic renal disease is one of the most common ultra-sonographic findings in older cats. If you're doing ultrasounds on cats, you're sure to see signs of chronic renal changes daily.

Diagnostic Imaging: Skin mass or pulmonary nodule

Mar 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

Thoracic radiographs for metastatic disease are part of every day practice. A diagnosis of pulmonary nodules has an important effect on treatment decisions, and some radiographs are difficult to interpret.

Ultrasound of arterial and venous thrombosis

Feb 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

Thrombosis is a complication of many diseases in veterinary medicine.

Seeing is believing: The subtleties of peritoneal detail

Jan 1, 2008
By:Allison Zwingenberger, DVM, Dipl. ACVR, Dipl. ACVDI

One of the subtleties of interpreting abdominal radiographs is peritoneal detail.