Today’s case is a 13-year-old male neutered Miniature Schnauzer with recurrent cystic calculi.
Case originally posted on April 25, 2007
Teaching and learning about veterinary diagnostic imaging.
Today’s case is a 13-year-old male neutered Miniature Schnauzer with recurrent cystic calculi.
There is a fat density mass with a thin rim of soft tissue opacity in the left dorsal and caudal abdomen. It is visible on the lateral projection ventral to L2-L7, and on the v/d between the spleen and left ilium.
Intraabdominal lipoma.
The decreased radiopacity of the mass compared to soft tissue is the key to diagnosing a lipoma. This is a benign and incidental lesion.
davidbessler says
I totally missed that. I used my “paradigm” for the abdomen. That helps me look at all the stuff that should be there and to check that it’s normal. How do you make sure to look for stuff that shouldn’t be there?
Allison Zwingenberger says
Hi David,
The systematic approach for looking at radiographs is great to direct your attention to the organs that are normally visible, and the common areas to evaluate for those not normally seen (like the pancreas). The unexpected finding is tricky. Some are more obvious, such as a mass or change in opacity. With those I often think about the structures present in that quadrant of the abdomen, and the organs you normally see as well as those that are too small to see (adrenal, ovary etc.) to come up with a list of differential diagnoses. Subtle findings like this are difficult though. We had help in seeing this one because it was palpated on physical exam, and much more obvious on ultrasound. If you don’t include these already, add “Is there a mass effect?” and “Is there any change in opacity?” to your abdominal interpretation paradigm. Obvious changes will jump out at you, but if you think about looking for these you’ll pick up small changes as well.