Trichoadenoma of the upper lip.

Background: Trichoadenoma of Nikolowski, who describe the first cases in 1958, is a rare and benign tumor of the hair follicle. It is well-differentiated and slowly-growing. The clinical appearance of Trichoadenoma (TA) can be similar to basal cell carcinoma or epidermal cyst.

Nerve sheath myxoma of the tongue.

Nerve sheath myxoma (NSM) of the oral mucosa is a slow-growing, benign, often asymptomatic submucosal mass. We report on a case of classical NSM of the tongue, with diagnostic and therapeutic approach to the case. Many NSM arise within the endoneurium of a peripheral nerve.

Mucosa-associated lymphatic tissue lymphoma of the lower lip in a child.

Mucosa-associated lymphatic tissue lymphoma of the lip in a child is a very rare clinical entity whose cause is poorly understood. We describe an 11-year-old boy who presented with a 5-month history of an asymptomatic nodule on the lower lip with the clinical appearance of a benign mucocele. After surgical excision of the lower lip lesion, lymphocyte phenotypic analysis and histologic examination of the specimen disclosed an extranodal marginal zone B-cell lymphoma of mucosa-associated lymphatic tissue type of the buccal minor salivary glands.