Metastasized Leydig cell tumor in a dog
Schweizer Archiv Fur Tierheilkunde
|January 13, 2016
Summary
A malignant Leydig cell tumor in a Fox Terrier metastasized to skeletal muscle. Despite surgical resection and metronomic chemotherapy, recurrence occurred, leading to euthanasia.
Area of Science:
- Veterinary Oncology
- Canine Cancer Research
- Surgical Oncology
Background:
- Leydig cell tumors are common canine testicular neoplasms.
- Metastasis of Leydig cell tumors, while uncommon, can occur.
- This case highlights a rare presentation of Leydig cell tumor metastasis.
Observation:
- An 11-year-old intact male Fox Terrier presented with a malignant Leydig cell tumor.
- The tumor metastasized to the skeletal musculature of the left hind limb.
- Tumor and metastasis were surgically resected with narrow margins.
Findings:
- Metronomic chemotherapy with thalidomide and dyclophosphamide was administered.
- Local recurrence at the metastasis site and pulmonary metastasis were observed 30 months post-surgery.
- The dog was ultimately euthanized due to disease progression.
Implications:
- This case underscores the potential for aggressive behavior and metastasis in Leydig cell tumors.
- Challenges in achieving complete tumor eradication and long-term disease control are evident.
- Further research into novel therapeutic strategies for metastatic canine testicular cancer is warranted.
