Dysuria Associated with Non-Neoplastic Bone Hyperplasia of the Os Penis in a Pug Dog

Noritaka Maeta
Takako Shimokawa Miyama
Kenji Kutara
Teppei Kanda
Ikki Mitsui
Akihiro Ohnishi
Masahiro Miyabe
Yuki Shimizu
Kaori Saeki
Yasuhiko Okamura
Kazuaki Yamazoe

A three-year-old male Pug presented with a three-year history of urolithiasis and repeated urethral obstruction. Biochemical analysis, ultrasonography, and retrograde urethrocystography revealed probable portosystemic shunt and incomplete urethral obstruction due to uric acid ammonium calculi. Enhanced computed tomography (CT) revealed portosystemic shunt and proliferation of the osseous tissue of the os penis, which was surgically removed. Histopathologically, the excised osseous tissue comprised bland lamellar bone without atypia or inflammation. Hyperplasia of the os penis was diagnosed based on the image findings and histopathology. The dysuria improved postoperatively. This is the first report of dysuria associated with non-neoplastic bone hyperplasia of the os penis in a dog. Careful evaluation of the os penis by CT is needed for accurate diagnosis in case of repeated penile urethral obstruction.

Veterinary Sciences

MDPI AG

8

1

6

6

10.3390/vetsci8010006

https://doi.org/10.3390/vetsci8010006
https://www.ncbi.nlm.nih.gov/pubmed/33401651
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7823430
https://www.mdpi.com/2306-7381/8/1/6/pdf