Which statement correctly contrasts Proliferative and Lytic processes in bone pathology?

• A. Proliferative describes tissue destruction; Lytic describes rapid growth
• B. Proliferative describes rapid cell growth forming a mass; Lytic describes tissue destruction
• C. Proliferative describes fusion anomalies; Lytic describes extra bones
• D. Proliferative describes degradation of soft tissue; Lytic describes deformation

Answer: (B)

The key idea here is distinguishing bone-forming activity from bone-destroying activity. Proliferative processes involve rapid cell growth that produces new bone or increases bone formation, often seen as masses, periosteal reactions, or sclerosis. Lytic processes involve destruction or resorption of bone tissue, creating areas of bone loss and radiolucent lesions.

The statement in question captures this contrast: proliferative describes rapid cell growth forming a mass, while lytic describes tissue destruction. That aligns with how these processes present in bone pathology.

Other options mix up or misplace the concepts. One option reverses the roles, implying proliferative is destruction and lytic is growth, which is not accurate. Another talks about fusion anomalies or extra bones, which are developmental variations rather than the proliferative–lytic distinction. A final option mentions soft tissue degradation and deformation, which misattributes the primary target (bone vs. soft tissue) and doesn’t reflect the core definitions of proliferative versus lytic bone processes.