<prompt> Necrotic nodules in lung are seen in -TBSarcoidosisRAAll of the above  <response>: Ans. is d i.e., All of the above o All dieseases given in options can cause pulmonary nodules with necrosis.o Pulmonary nodules with necrosis can be caused by1. Infective causes - TB, Histoplasma, syphilis, coceidiomycosis, Cats scratch disease.2. Non-infective causes - Wegners granulomatosis, RA, necrotizing sarcoidosis, hyalinizing granuloma, Idiopathic bronchocentric granulomatosis. 