Any sinonasal inflammation involving the midline that persists or remains refractory to treatment may be the first manifestation of potentially lethal drug addiction. Cocaine abuse should be considered in the differential diagnosis of destructive lesions of the nasal cavity even in the presence of a positive ANCA test.
Objectives: To detect amplification of the HER2/neu gene by means of fluorescence in situ hybridization (FISH) in a series of 13 salivary duct carcinomas (SDCs) and to compare the results with immunohistochemical (IHC) assessment of HER2/neu protein expression.
Cultured epithelial cells show both time- and dose-dependent increases in apoptosis and cellular damage on cocaine treatment. We suggest that some abusers trigger CIMDL by abnormally boosting apoptosis within nasal epithelial cells. Cocaine abusers with higher apoptotic rates may predict whether they will eventually develop CIMDL.
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