Canalicular adenoma
Canalicular Adenoma[edit | edit source]
Canalicular adenoma is a rare, benign salivary gland tumor that predominantly occurs in the upper lip and buccal mucosa. It is characterized by its distinctive histological appearance and is most commonly found in older adults.
Clinical Presentation[edit | edit source]
Patients with canalicular adenoma typically present with a slow-growing, painless mass in the upper lip or buccal mucosa. The tumor is usually well-circumscribed and may be multifocal, as seen in some cases. It is more common in females and typically occurs in individuals over the age of 50.
Histopathology[edit | edit source]
Histologically, canalicular adenoma is characterized by its unique canalicular architecture. The tumor is composed of columnar or cuboidal epithelial cells arranged in anastomosing cords and duct-like structures. These structures are often surrounded by a loose, myxoid stroma. The cells have uniform, round nuclei and scant cytoplasm.
A notable feature of canalicular adenoma is the presence of "beading" along the cords of epithelial cells, which can be observed under the microscope.
Diagnosis[edit | edit source]
The diagnosis of canalicular adenoma is primarily based on histological examination. A biopsy of the lesion is performed, and the tissue is examined under a microscope to confirm the characteristic features of the tumor. Imaging studies, such as MRI or CT scan, may be used to assess the extent of the lesion.
Treatment[edit | edit source]
The treatment of choice for canalicular adenoma is surgical excision. Due to its benign nature, complete removal of the tumor is usually curative, and recurrence is rare. It is important to ensure clear surgical margins to prevent any potential recurrence.
Prognosis[edit | edit source]
The prognosis for patients with canalicular adenoma is excellent. The tumor is benign, and once excised, it rarely recurs. There is no known potential for malignant transformation.
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