Which description best defines panacinar emphysema?

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Panacinar emphysema involves uniform destruction of the entire acinus, meaning all parts from the respiratory bronchioles through the alveolar ducts and alveoli are damaged. This diffuse involvement leads to airspace enlargement throughout the acinus and loss of elastic recoil. It’s the opposite of centriacinar type, where only the central or proximal parts of the acinus are affected, and paraseptal type, where the distal portions near the septa are involved. Destruction of airway walls without alveolar destruction would point to a non-emphysematous airway disease, and destruction of distal airways only aligns with paraseptal rather than panacinar. So, all parts of the acinus being damaged best captures panacinar emphysema.