What are the two tiers of the Kiupel grading scheme?

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Multiple Choice

What are the two tiers of the Kiupel grading scheme?

Explanation:
Kiupel grading uses a two-tier system for canine mast cell tumors: low-grade and high-grade. This simplified approach was designed to be more reproducible and to provide clearer prognostic guidance. High-grade tumors are associated with more aggressive behavior and poorer outcomes, while low-grade tumors tend to behave less aggressively and have a better prognosis. The other options don’t fit because Kiupel is not a location-based (subcutaneous vs dermal) distinction, not a three-tier Grade I–III system (that’s an older Patnaik scheme), and not a benign vs malignant dichotomy.

Kiupel grading uses a two-tier system for canine mast cell tumors: low-grade and high-grade. This simplified approach was designed to be more reproducible and to provide clearer prognostic guidance. High-grade tumors are associated with more aggressive behavior and poorer outcomes, while low-grade tumors tend to behave less aggressively and have a better prognosis. The other options don’t fit because Kiupel is not a location-based (subcutaneous vs dermal) distinction, not a three-tier Grade I–III system (that’s an older Patnaik scheme), and not a benign vs malignant dichotomy.

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