Which of the following is a growth-based classification of tumors?

• A. Solid and hematological tumors
• B. Benign and malignant tumors
• C. Primary and secondary tumors
• D. Carcinomas and sarcomas

Answer: (B)

Verified step by step guidance

1. Understand the question: The problem is asking about a classification of tumors based on their growth characteristics. Tumors can be classified in various ways, such as by their location, origin, or growth behavior.
2. Review the options provided: The options include 'Solid and hematological tumors,' 'Benign and malignant tumors,' 'Primary and secondary tumors,' and 'Carcinomas and sarcomas.' Each classification has a specific basis, so we need to identify which one is based on growth behavior.
3. Clarify the concept of growth-based classification: Tumors classified by growth behavior are typically categorized as 'Benign' (non-invasive, slow-growing, and localized) or 'Malignant' (invasive, fast-growing, and capable of spreading to other tissues).
4. Analyze the other options: 'Solid and hematological tumors' classify tumors based on their physical state or tissue type. 'Primary and secondary tumors' classify tumors based on their origin (primary being the original site and secondary being metastasized). 'Carcinomas and sarcomas' classify tumors based on the tissue of origin (epithelial or connective tissue).
5. Conclude that the correct classification based on growth behavior is 'Benign and malignant tumors,' as this directly relates to how the tumor grows and spreads.