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*Hypersensitivity to oral antigens
 
*Hypersensitivity to oral antigens
 
*Bacteria
 
*Bacteria
**Porphyromonas
+
**''Porphyromonas'' sp
 
**''Haemobartonella henselae''
 
**''Haemobartonella henselae''
 
*Viruses
 
*Viruses
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===Biopsy===
 
===Biopsy===
Biopsies should be taken to rule out any malignant neoplasms (ie squamous cell carcinoma) or other pathology ( ie eosinophilic granuloma)
+
Biopsies should be taken to rule out any malignant neoplasms (ie squamous cell carcinoma) or other pathology ( ie eosinophilic granuloma) and to confirm the diagnosis. Histologically, dense band-like submucosal lymphocytic-plasmacytic infiltrates are reported with this condition.
     
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