Aspergillus causes all except:
**Core Concept**
Aspergillus is a genus of fungi that can cause a range of diseases in humans, from allergic reactions to invasive infections. The pathogenicity of Aspergillus species is attributed to their ability to produce various secondary metabolites, including toxins and enzymes that contribute to tissue damage and immune evasion.
**Why the Correct Answer is Right**
Aspergillus species are known to cause allergic bronchopulmonary aspergillosis (ABPA), chronic pulmonary aspergillosis (CPA), and invasive aspergillosis (IA) in immunocompromised patients. The fungus can also cause aspergilloma, a type of fungal ball that forms in pre-existing cavities of the lungs. The pathogenesis of Aspergillus infections involves the production of proteolytic enzymes, such as elastase and gelatinase, which help the fungus to invade and destroy lung tissue.
**Why Each Wrong Option is Incorrect**
**Option A:** Aspergillus species are not typically associated with this condition.
**Option B:** While Aspergillus can cause invasive disease, it is not the primary cause of this condition.
**Option C:** Aspergillus species are known to cause this condition, particularly in immunocompromised patients.
**Clinical Pearl / High-Yield Fact**
Aspergillus species are ubiquitous in the environment and can be isolated from soil, water, and decaying organic matter. Patients with chronic lung disease, such as cystic fibrosis, are at increased risk of developing aspergillosis.
**Correct Answer:** C. Aspergillus species are known to cause this condition, particularly in immunocompromised patients.