Case 85. Reference case 85C

　 　 　 　
　 Allergic bronchopulmonary aspergillosis, showing obstruction of the bronchial lumen by eosinophilic exudates with Charcot-Leiden's crystals (HE). 　
　 　 　 　

　

 　 Marked eosinophilic infiltration and epithelioid cell reaction in the bronchial wall indicates an allergic mechanism of this rare diseased condition.