Which ONE of the following compounds is not associated with pulmonary fibrosis/or Alveolar damage

The answer is E. Stilboestrol is not known to cause pulmonary fibrosis. The other compounds may all cause pulmonary fibrosis; paraquat (D) taken either accidentally or intentionally causes severe intra-alveolar fibrosis; the other drugs all cause pulmonary fibrosis in a proportion of patients. Amiodarone (A) causes aggregation of macrophages in alveoli.