Which tumor has a 90% curative rate with chemotherapy?

The Transmissible Venereal Tumor (TVT) is notably responsive to chemotherapy, and the treatment can achieve an impressive 90% cure rate in affected dogs. TVT is a unique tumor transmitted through sexual contact and is not associated with a specific breed or age, making it an interesting case in veterinary oncology. Chemotherapeutic agents such as vincristine are commonly used and have proven effective at inducing regression of the tumor, leading to this high cure rate when treated appropriately.

In contrast, lymphoma is treatable with chemotherapy but may not achieve such a high curative rate across all cases, as the outcome can vary significantly based on subtype and staging. Mast cell tumors can also be treated effectively, but the success rates depend heavily on factors like tumor grade and whether it is localized or metastatic. Osteosarcoma typically requires a combination of surgery and chemotherapy, and while chemotherapy can help manage the disease, it does not alone provide a 90% cure rate.