Canalicular Adenoma- A case report of a rare benign tumor of minor salivary gland of upper lip

Abstract

Among all salivary gland tumors, Canalicular adenoma constitutes only 1% of all neoplasms. Oral cavity is the most common location for this rare benign neoplasm of minor salivary glands. Within oral cavity upper lip is the most common site for this tumor followed by buccal mucosa and sometimes it is rarely seen in parotid gland. Previously CA was considered as a type of monomorphic adenoma, however in latest World Health Organization (WHO) classification, CA is classified as a separate entity under benign neoplasms. Here we report a case of CA in a 65 year old female patient who presented with swelling upper lip since 10 months. The swelling was painless submucosal nodule, firm in consistency measuring approximately 2 cm in diameter. Diagnosis of mucous retention cyst was made clinically. Cyst was excised and on histopathological examination we made diagnosis of Canalicular adenoma. We report this case because of rarity of this lesion.