Primary prostatic leiomyosarcoma with pulmonary metastases in a dog
Barbara Bacci1, Massimo Vignoli, Federica Rossi
1DVL Veterinary Diagnostic Laboratory, via Gramsci 1/3, Sasso Marconi, 40037 Bologna, Italy.
Journal of the American Animal Hospital Association
|March 3, 2010
Summary
A rare canine prostate cancer, leiomyosarcoma, was diagnosed in a Jack Russell terrier. This aggressive tumor spread to the lungs, highlighting the need for early detection and treatment strategies.
Area of Science:
- Veterinary Oncology
- Canine Pathology
- Surgical Oncology
Background:
- Prostatic diseases are common in intact male dogs.
- Malignant prostatic tumors, while rare, can be aggressive.
- Leiomyosarcoma is a mesenchymal tumor arising from smooth muscle.
Observation:
- A 6-year-old intact male Jack Russell terrier presented with caudal abdominal pain.
- Ultrasound revealed a large prostatic mass; CT staging identified pulmonary nodules.
- Histopathology showed spindle cell proliferation consistent with sarcoma.
Findings:
- Immunohistochemistry confirmed the tumor cells were negative for cytokeratin but positive for vimentin and alpha-smooth muscle actin.
- The tumor was diagnosed as primary prostatic leiomyosarcoma with pulmonary metastases.
- This represents a rare instance of a primary prostatic mesenchymal tumor in dogs.
Implications:
- This case underscores the importance of advanced imaging for staging canine prostatic tumors.
- Accurate diagnosis through immunohistochemistry is crucial for treatment planning.
- Understanding rare tumor types like prostatic leiomyosarcoma aids in developing targeted therapies and improving prognosis for affected dogs.
