BACKGROUND: Primary infection with tuberculosis occurs only rarely on the skin. The lesions of Lupus vulgaris are usually found on the head or neck. The skin of and around the nose is frequently involved. But, we report a rare case, where a 36 years' old male patient presented with a Lupus vulgaris lesion over the upper part of the cheek, near the outer canthus of the right eye, of 9 years' duration. Histopathological examination showed granulomatous infiltration, with caseous necrosis. Mantoux test was positive. The lesion showed marked improvement on antituberculous treatment. We want to emphasize that histopathological examination has diagnostic value in Lupus vulgaris.
Pleomorphic adenoma is the most common benign tumor occurring in the major and minor salivary glands. We report a case of pleomorphic adenoma with extensive squamous metaplasia in the palate of a 20 year old man. The dimensions of the tumor were 3x2x2cm. More than 75% 0f the epithelial element in the tumor was composed of sheets of squamous cells, with multiple keratin filled cysts. This case illustrates that pleomorphic adenoma with squamous metaplasia presents a potential for misinterpretation as mucoepidermoid carcinoma and squamous cell carcinoma. We discuss the various pitfalls and the features that are helpful in distinguishing between these lesions.
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