Empyema

Guttural pouch empyema is defined as the accumulation of purulent, septic exudate in the guttural pouch.

The infection usually develops subsequent to a bacterial (primarily Streptococcus spp) infection of the upper respiratory tract.

Clinical signs

• purulent nasal discharge,
• painful swelling in the parotid area,
• stiff head carriage
• stertorous breathing.
• Fever, depression, and anorexia may or may not be seen. 

Diagnosis 
endoscopic examination of the guttural pouch.

Radiographs of the pharynx 

Treatments

• Systemic antimicrobial therapy alone rarely resolves the infection; 
• guttural pouch lavage is necessary. 
• Penicillin gel can be administered directly into the guttural pouch and may enhance bacterial clearance.
• Retropharyngeal abscesses can be resolved by rupturing the abscess into the guttural pouch using an endoscopic blade.
• If endoscopic rupture into the guttural pouch is unsuccessful, surgical drainage is necessary for 
• Tracheotomy may be necessary to provide a temporary alternative airway in these cases.

 For more information 

Mercks veterinary manual