Lichenoid Dysplasia-A Case Report with a Review of Differential Diagnosis.

Lichenoid Dysplasia (LD) is often regarded as lichen planus with dysplastic features, as it mimics lichen planus clinically and histologically. Although it has been confirmed that these two entities are entirely different with not so similar etiopathogenesis, yet the confusion still exists. The separation between the two is of utmost importance as each of them has their own prognosis and treatment plan. We report one such case, where a 51-year-old male with excessive burning sensation had similar clinical picture as that of lichen planus but was histologically diagnosed as LD.

Verrucous Hyperplasia: Case report and differential diagnosis.

Verrucous hyperplasia (VH) is a rare exophytic oral mucosal lesion which can transform into verrucous carcinoma (VC), its malignant but clinically similar counterpart. These entities can be distinguished by the lack of invasive growth in VH cases; as such, it is essential to include a margin with adequate depth when performing a biopsy of the epithelium of the lesion. We report an 80-year-old male patient who presented to the Bapuji Dental College & Hospital, Davangere, Karanataka, India, in 2011 with a warty whitish-pink growth on the inside of his cheek. The patient was treated with wide surgical excision of the lesion and a diagnosis of VH was made based on histopathological features. There was no evidence of recurrence at a five-year follow-up. This report highlights the histological variations, pathogenesis and differential diagnosis of VH.

Cystic Adenomatoid Odontogenic Tumor.

Adenomatoid Odontogenic Tumor (AOT) is a well-established benign epithelial lesion of odontogenic origin. Rightfully called "the master of disguise," this lesion has been known for its varied clinical and histoarchitectural patterns. Not only does AOT predominantly present radiologically as a unilocular cystic lesion enclosing the unerupted tooth (which is commonly mistaken as a dentigerous cyst) but the lesion also presents rarely with a cystic component histopathologically. We present one such unusual case of cystic AOT associated with an impacted canine, mimicking a dentigerous cyst. The present case aims to highlight the difference between cystic AOT and dentigerous cyst radiographically. The exact histogenesis of AOT and its variants still remains obscure. An attempt has been made to hypothesize the new school of thought regarding the origin of AOT.