Mycological and histological associations of Candida in oral mucosal lesions

The present study aimed to assess the presence and level of colonization of Candida in patients with oral mucosal lesions, to determine the presence or absence of candidal hyphae in biopsy specimens and to correlate the degree of epithelial dysplasia with the number of colony-forming units of Candida. We performed a prospective study including 50 patients diagnosed as having oral potentially malignant and malignant disorders. These patients had lesions such as leukoplakia, lichen planus, lichenoid reaction, verrucous carcinoma and oral squamous cell carcinoma. An oral swish with 10 mL of normal saline was performed, and this was collected in a sterile plastic container. Candidal colony-forming units were assessed in the specimen. This was followed by a biopsy of the lesion, which was sent for histopathologic examination for dysplasia and severity, and to assess the presence or absence of candidal hyphae. The results of the present study revealed a correlation between higher Candida colonization and increasing severity of dysplasia. An effort was made to correlate Candida by histologic and mycologic means with epithelial dysplasia. If such a correlation is strongly established, then the importance of antimycotic therapy can be emphasized to avoid deterioration.