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==Description==  

==Description==  

The lesions appear as masses that are friable and ulcerated. Many amyloid-producing odontogenic tumours are [[Neoplasia - Pathology#Nomenclature|melanotic]] which makes them difficult to distinguish from the more aggressive malignant melanoma. They can erode but not infiltrate adjacent bone. The most prominent feature of this type of tumour is that it produces amyloid which tends to calcify.

The lesions appear as masses that are friable and ulcerated. Many amyloid-producing odontogenic tumours are [[Neoplasia - Pathology#Nomenclature|melanotic]] which makes them difficult to distinguish from the more aggressive malignant [[Melanoma|melanoma]]. They can erode but not infiltrate adjacent bone. The most prominent feature of this type of tumour is that it produces amyloid which tends to calcify.

==Typical Signalment==

==Typical Signalment==

==Diagnosis==

==Diagnosis==

===Clinical Signs===

===Clinical Signs===

Include halitosis, oral bleeding, dental disruption or loss, facial or mandibular deformity, excessive salivation, growth protruding from the mouth and rarely dysphagia.

Include halitosis, oral bleeding, dental disruption or loss, facial or mandibular deformity, excessive salivation, growth protruding from the mouth and rarely dysphagia.

   

   

===Diagnostic Imaging===

===Diagnostic Imaging===

Skull radiography may show a soft tissue opacity  with mineralization within the mass. Periosteal reaction of the adjacent bone may be visualised. If a malignant neoplasm is a dignostic possibility, thoracic radiography should be carried out to evaluate for lung metastases.

Skull radiography may show a soft tissue opacity  with mineralization within the mass. Periosteal reaction of the adjacent bone may be visualised. If a malignant neoplasm is a diagnostic possibility, thoracic radiography should be carried out to evaluate for lung metastases.

 

===Biopsy===

===Biopsy===

 

Biopsy is required for a definitive diagnosis.

Required for a definitive diagnosis

Incisional biopsy is the best option, when undertaking cytological or grab procedures it is difficult to obtain a representative sample.

Incisional biopsy is the best option, when undertaking cytological or grab procedures it is difficult to obtain a representative sample.

Merck & Co (2008) '''The Merck Veterinary Manual'''

Merck & Co (2008) '''The Merck Veterinary Manual'''

[[Category:Cat]][[Category:Oral_Cavity_-_Proliferative_Pathology]][[Category:Teeth_-_Proliferative_Pathology]]

[[Category:Cat]][[Category:Oral_Cavity_-_Proliferative_Pathology]][[Category:Teeth_-_Proliferative_Pathology]]

[[Category:To_Do_-_Caz]]

[[Category:To_Do_-_Caz]]

[[Category:Dog]]

[[Category:Dog]]

[[Category:To_Do_- Review]]

[[Category:Expert Review]]