Allergic bronchopulmonary aspergillosis (ABPA) is an allergic lung disorder. It is related to a fungus. Aspergillosis can also occur as:

  • A lung infection that can spread to other parts of the body, which is more common in patients with suppressed immune systems
  • A fungal growth in a lung cavity that has healed from a previous lung disease or infection

ABPA is caused by an allergic reaction to an inhaled fungus. It grows and flourishes in decaying vegetation, soil, certain foods, dust, and water. The inhaled fungus colonizes mucus in the lungs, causing:

  • Sensitization to the fungus
  • Recurring allergic inflammation of the lungs
  • Packing of the tiny alveoli air sacs in the lungs with a type of white blood cell involved in certain allergic reactions and infections with parasites
Healthy Alveoli
Alveoli
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