IDEXX Diagnostic Challenge: Cat with Enlarged Mesenteric Lymph Node

A 17-year-old cat presented with a history of weight loss. On ultrasound there was a moderately enlarged, hypoechoic and rounded caudal mesenteric lymph node. The only other significant finding was mild degenerative changes to the kidneys. Fine needle aspirate samples for cytology were collected from the mesenteric lymph node. What is Your Interpretation of the Cytology?  Below are images of lymph node cytology. What is your interpretation? Figure 1. Lymph node cytology. 100x…

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Tear Staining in Dogs: An Ophthalmologist’s Perspective

Our clients often seek advice on how to treat the messy, frustrating problem of tear staining. If you research “tear staining”, you will find numerous different products, ideas, and suggestions that claim to fix or prevent the staining. The fact that there are so many products available means that there is not ONE magic treatment or approach that will work for every dog. The red/brown discoloration in tears comes from porphyrin. Porphyrins are iron containing…

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Radiology View: What’s Your Read? Six-month-old Dog with Neck Pain

Radiology View: What’s Your Read? Patient Presentation  A six-month-old intact male terrier mix presented for pain on neck manipulation. View the radiographs (figure 1 and figure 2) below and consider the following questions: What are your radiographic findings? What is your diagnosis? Figure 1. Lateral radiograph of the spine from a six-month-old intact male terrier mix with neck pain.   Figure 2. Ventrodorsal radiograph of the spine from a six-month-old intact…

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