Case of the week 3.2.20
Publication Date: 2020-03-02
History
9 year old collie. No history provided
6 images
Findings
Orthogonal radiographs of the abdomen are available for interpretation.
The serosal detail is normal.
In the caudal ventral abdomen, in the region of the bladder, there is a teardrop-shaped, large, mostly soft tissue opaque mass (10.7cm x 6.2cm), with a thin rim of mineralization of its periphery, and stippled to amorphous mineralization at its caudal aspect. On the right lateral view, the caudal aspect of this mass border effaces with an ill-defined rounded soft tissue opacity just cranial to the pelvic inlet, most consistent with the bladder.
On the left lateral view, there is a small round soft tissue opacity at the level of L7 S1, ventral to the colon, which is partially superimposed with the caudal aspect of the described mass.
The liver, gastrointestinal tract, spleen, and kidneys are normal. There is incidental multifocal mild spondylosis deformans of the included spine. There are multiple irregularly marginated mineral opaque nodules of the caudal ventral abdomen and near the prepuce.
On the edge of the film, the esophagus is largely distended with gas.
Diagnosis
- Large, mineralized mass paraprostatic cyst. Abdominal ultrasound plus/minus a positive contrast cystourethrogram could be performed for further evaluation.
- Irregularly marginated mineralized nodules at the caudoventral abdomen are most consistent with debris/crusting around the nipples, or nonspecific cutaneous nodules.
- Megaesophagus. The patient also had concurrent aspiration pneumonia (seen on thoracic radiographs not provided). The esophageal dilation may be due to esophagitis, or secondary megaesophagus (idiopathic, neoplastic, endocrine) cannot be ruled out.
Discussion
The egg-shell appearance of the caudal abdominal structure is relatively classic for paraprostatic cyst. The patient underwent an abdominal ultrasound and this was confirmed.
Notes
Case initially seen by Dr Morandi
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