<prompt> Which of the following can cause pulmonary eosinophilia?AscariaParagonismus westermanniW. banroftiAll the above  <response>: Inhaled or ingested extrinsic factors, including medications and infectious agents eg, parasites, fungi, mycobacteria, may trigger an eosinophilic immune response. This may be mild and self-limited, as in Loeffler syndrome. Intrinsic pulmonary eosinophilic syndromes are generally idiopathic in nature. They include a diverse group of autoimmune and idiopathic syndromes ranging from blood dyscrasias to vasculitis. This group includes chronic eosinophilic pneumonia CEP, idiopathic hypereosinophilic syndrome IHES, Churg-Strauss syndrome CSS, and eosinophilic granuloma EG; pulmonary histiocytosis X or Langerhans cell granulomatosis. 