Which of the following is true regarding idiopathic non-specific interstitial pneumonia?

NSIP is a subacute restrictive process Occurs at a younger age Most commonly in women who have never smoked Good prognosis, with most showing improvement after treatment with Glucocoicoids in combination with Azathioprine HRCT :- shows bilateral, subpleural ground-glass opacities, often associated with lower lobe volume loss, areas of consolidation and reticular abnormalities may be present, but honeycombing is unusual.