8 year old male dog with hematuria for 2 years
In these abdominal radiographs, there were two oval soft tissue opacities in the caudal abdomen. One of them had a mineralized area that was linear and near the periphery. It was difficult to tell which one might be the bladder. The pelvis was not included in the lateral projection, so it was important to ask for an additional radiograph! Differential diagnoses included paraprostatic cyst and testicular tumor. The next step was to ask for a contrast study of the lower urinary tract. Which one? Either a cystogram or cystourethrogram would be appropriate. Diagnosis: mineralized paraprostatic cyst. One well-read resident commented that a mineralized paraprostatic cyst is called an osteocollagenous prostatic retention cyst.
Zekas LJ, Forrest LJ, Swainson S, et al. Radiographic diagnosis: mineralized paraprostatic cyst in a dog. Vet Radiol Ultrasound 2004;45:310-311.
Question 1: What testicular tumor will cause prostatic hypertrophy?
Question 2: What testicular tumor is most likely to metastasize?
Put your answers in the comments section!
5 year old Bull Mastiff that is coughing and vomiting blood.
On these thoracic radiographs, there was a stippled gas and soft tissue pattern in the right middle lung lobe. There was a small pleural effusion associated with this lobe, and the caudal border of the lobe was convex in shape. Differentials included lung lobe torsion and lung lobe abscess. I think the clue to this case is the convex border of the lobe. The fissure between the right middle and caudal lung lobes is usually convex, so its reversal means the lung lobe is enlarged. An emphysematous, necrotic lobe will be enlarged, where an abscessed lobe may be collapsed from exudate blocking the airways. Localized effusion is often associated with the torsion. Diagnosis: lung lobe torsion.
Question: Which lung lobes are most often affected by torsion?
Recent Comments