Occupational asthma duetoporcine pancreatic amylase

caseofoccupational asthmaina41year oldhistopathology laboratory technician attributable toa powderpreparation of theporcine pancreatic enzymeamylase is reported. Thediagnosis wasconfirmed by adouble blind, placebo controlled, inhala- tionchallenge study whichshowedimme- diateand lateasthmaticreactions associated witha significant increase in airway responsiveness tomethacholine.