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**Lesion is caudal to nasal septum eg: pharyngeal lesion; LRT lesion in [[Hindgut Fermenters - Horse - Anatomy & Physiology|horses]]  
 
**Lesion is caudal to nasal septum eg: pharyngeal lesion; LRT lesion in [[Hindgut Fermenters - Horse - Anatomy & Physiology|horses]]  
 
**Lesion has resulted in nasal septum destruction
 
**Lesion has resulted in nasal septum destruction
***[[Nasal cavity - hyperplastic and neoplastic|Neoplasia]]
+
***[[Nasal Cavity Hyperplastic and Neoplastic - Pathology|Neoplasia]]
 
***[[Respiratory Fungal Infections - Pathology|Fungal infection]]
 
***[[Respiratory Fungal Infections - Pathology|Fungal infection]]
 
*Unilateral discharge:
 
*Unilateral discharge:
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===Facial swelling===
 
===Facial swelling===
*[[Nasal cavity|Nasal]]
+
*[[Nasal Cavity - Pathology|Nasal]]
 
*[[Nasopharynx - Pathology|Pharyngeal]]
 
*[[Nasopharynx - Pathology|Pharyngeal]]
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*May originate from nasopharynx or lower respiratory tract  
 
*May originate from nasopharynx or lower respiratory tract  
 
*Causes
 
*Causes
**Inflammation eg: [[Nasal cavity - inflammatory|ulcerative rhinitis]]
+
**Inflammation eg: [[Nasal Cavity Inflammatory - Pathology|ulcerative rhinitis]]
**Neoplasia eg: [[Nasal cavity - hyperplastic and neoplastic|infiltrating tumour]], haemangioma
+
**Neoplasia eg: [[Nasal Cavity Hyperplastic and Neoplastic - Pathology|infiltrating tumour]], haemangioma
 
**Trauma  
 
**Trauma  
 
**Clotting defects
 
**Clotting defects
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*'''Horse''':
 
*'''Horse''':
**[[Nasal cavity - inflammatory#Infectious causes of rhinitis|Nasal aspergillosis]]
+
**[[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|Nasal aspergillosis]]
**[[Nasal cavity - hyperplastic and neoplastic#Progressive ethmoidal haematoma|Ethmoidal haematoma]] = 'Haemorrhagic nasal polyp', 'Progressive haematoma' - arise from the ethmoid region and can extend to fill the nasal cavity. They can be difficult to control as they can recur after surgery.  
+
**[[Nasal Cavity Hyperplastic and Neoplastic - Pathology#Progressive ethmoidal haematoma|Ethmoidal haematoma]] = 'Haemorrhagic nasal polyp', 'Progressive haematoma' - arise from the ethmoid region and can extend to fill the nasal cavity. They can be difficult to control as they can recur after surgery.  
 
***Histology - multiple areas of acute to chronic haemorrhage within a fibrous tissue stroma.
 
***Histology - multiple areas of acute to chronic haemorrhage within a fibrous tissue stroma.
 
**[[Lungs - circulatory#Pulmonary haemorrhage|Exercise-induced pulmonary haemorrhage]]
 
**[[Lungs - circulatory#Pulmonary haemorrhage|Exercise-induced pulmonary haemorrhage]]
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**Nasal/pharyngeal trauma/foreign body
 
**Nasal/pharyngeal trauma/foreign body
 
**[[Paranasal Sinuses Hyperplastic and Neoplastic - Pathology|Sinus neoplasia]]
 
**[[Paranasal Sinuses Hyperplastic and Neoplastic - Pathology|Sinus neoplasia]]
**[[Nasal cavity - hyperplastic and neoplastic#Nasal and paranasal sinus cysts|Sinus cyst]]
+
**[[Nasal Cavity Hyperplastic and Neoplastic - Pathology#Nasal and paranasal sinus cysts|Sinus cyst]]
 
**[[Paranasal Sinuses Inflammatory - Pathology|Sinusitis]]
 
**[[Paranasal Sinuses Inflammatory - Pathology|Sinusitis]]
 
**Lower airway disease
 
**Lower airway disease

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