Changes

*[[Aspergillus spp.|''Aspergillus fumigatus'']]

*[[Aspergillus spp.|''Aspergillus fumigatus'']]

*Most commonly in dogs but also other species

*Most commonly in dogs but also other species

*Causes [[Nasal cavity - inflammatory#Infectious causes of rhinitis|rhinitis]], often also involves the [[Paranasal sinuses - inflammatory#Infectious causes of sinusitis|frontal sinus]]

*Causes [[Nasal cavity - inflammatory#Infectious causes of rhinitis|rhinitis]], often also involves the [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|frontal sinus]]

*Chronic necrotising inflammation with friable exudate containing necrotic tissue and fungal hyphae

*Chronic necrotising inflammation with friable exudate containing necrotic tissue and fungal hyphae

* Result in severe neutrophilic [[Nasal cavity - inflammatory|rhinitis]]/[[Paranasal sinuses - inflammatory|sinusitis]]

* Result in severe neutrophilic [[Nasal cavity - inflammatory|rhinitis]]/[[Paranasal Sinuses Inflammatory - Pathology|sinusitis]]

*These lesions can be aggressive causing destruction of turbinates and nasal septum

*These lesions can be aggressive causing destruction of turbinates and nasal septum

*Can occur secondary to areas of mucosal compromise eg: adjacent to a space-occupying lesion

*Can occur secondary to areas of mucosal compromise eg: adjacent to a space-occupying lesion

**May present with neurological dysfunction  

**May present with neurological dysfunction  

**Rarely extends to other resions: cranium, middle ear, atlanto-occipital joint

**Rarely extends to other resions: cranium, middle ear, atlanto-occipital joint

**May extend to [[Paranasal sinuses - inflammatory#Infectious causes of sinusitis|sinuses]]

**May extend to [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|sinuses]]

===''Cryptococcus neoformans''===

===''Cryptococcus neoformans''===