text: Flexible fibreoptic bronchoscopy may be helpful in the diagnosis of<unk> . This technique assists in determining the cause of obstruction and removal of mucus plugs. Biopsies taken during fiberoptic bronchoscopy helps in the diagnosis of malignancy and allergic bronchopulmonary aspergillosis.
option_0: Atelectasis other diagnostic studies
option_1: Gangrene other diagnostic studies
option_2: Farmer's lung other diagnostic studies
option_3: Volvulus other diagnostic studies
option_4: Chest pain other diagnostic studies
option_5: Incidentaloma other diagnostic studies
option_6: Coma other diagnostic studies
option_7: Pulmonary edema other diagnostic studies