Systemic AA amyloidosis is most commonly secondary to:
1) Chronic inflammatory conditions tuberculosis, rheumatoid arthritis, osteomyelitis, bronchiectasis
2) Multiple myeloma
3) Isolated atrial amyloid
4) Alzheimer's disease
📝 Explanation:
Correct answer: 1) AA (amyloid-associated) protein derives from serum amyloid A, an acute-phase reactant elevated in chronic inflammation/infection (TB is a classic Indian-exam favorite) and chronic inflammatory arthritides. AL amyloid (light chain) is associated with plasma cell dyscrasias like multiple myeloma a key differentiator tested repeatedly.