Difference between revisions of "Sinusitis"
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*Often undetected unless it causes facial deformity or a draining tract onto the skin | *Often undetected unless it causes facial deformity or a draining tract onto the skin | ||
| − | *Seromucous sinuitis in not significant, often an extension of viral infection in [[Nasal | + | *Seromucous sinuitis in not significant, often an extension of viral infection in [[Nasal Cavity Inflammatory - Pathology#Rhinitis|nasal cavity]] |
*Purulent sinusitis tends to obstruct drainage -> chronic purulent sinusitis | *Purulent sinusitis tends to obstruct drainage -> chronic purulent sinusitis | ||
*Most important in horses due to their complex sinuses | *Most important in horses due to their complex sinuses | ||
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**Rarely [[Respiratory Fungal Infections - Pathology#In Horses|fungal infections]] | **Rarely [[Respiratory Fungal Infections - Pathology#In Horses|fungal infections]] | ||
*'''Secondary''': | *'''Secondary''': | ||
| − | **Most common sequel to [[Nasal | + | **Most common sequel to [[Nasal Cavity Inflammatory - Pathology#Rhinitis|rhinitis]] |
**Dental or periodontal disease (maxillary sinus) | **Dental or periodontal disease (maxillary sinus) | ||
**Penetrating infections from dehorning wounds and fractures of facial bones (frontal sinus) | **Penetrating infections from dehorning wounds and fractures of facial bones (frontal sinus) | ||
Revision as of 21:41, 4 August 2008
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Sinusitis
- Often undetected unless it causes facial deformity or a draining tract onto the skin
- Seromucous sinuitis in not significant, often an extension of viral infection in nasal cavity
- Purulent sinusitis tends to obstruct drainage -> chronic purulent sinusitis
- Most important in horses due to their complex sinuses
- Primary:
- Young horses are more prone as they are susceptible to Strangles
- Following transient systemic Streptococcus infection
- Rarely fungal infections
- Secondary:
- Most common sequel to rhinitis
- Dental or periodontal disease (maxillary sinus)
- Penetrating infections from dehorning wounds and fractures of facial bones (frontal sinus)
- Expanding mass
- Purulent inflammation of sinuses is likely to become chronic due to poor drainage
- Inflammation may block the drainage of the sinuses and cause distortion of the overlying bones
- May result in empyema, inspissated exudate, in horses
- In sheep often due to Oestrus ovis infection
Infectious causes of sinusitis
| . | VIRAL | BACTERIAL | FUNGAL | PARASITIC |
| Dogs | . | secondary | A. fumigatus | Linguatula serrata |
| . | . | . | . | Capillaria aerophila |
| Cats | Feline viral rhinotracheitis | secondary | Aspergillus fumigatus | Linguatula serrata sometimes |
| . | . | . | . | Capillaria aerophila |
| Horses | . | Strangles | Aspergillus spp. | . |
| . | . | Streptococcus equi subsp. zooepidemicus | . | . |
| Cattle | . | secondary | . | . |
| Sheep | . | . | . | Oestrus ovis larvae |
| Pigs | Inclusion body rhinitis | . | . | . |
For an overview of respiratory infections see Respiratory System Inflammation - Pathology