Oral Pathology Salivary Glands Tumor Exercises

Pleomorphic adenoma is the most common salivary gland tumor. It is a benign tumor that arises from the epithelial cells of the salivary glands. It is characterized by a mixture of different cell types and can occur in any major or minor salivary gland. Although it is usually benign, there is a small risk of malignant transformation. Treatment typically involves surgical removal of the tumor.

Warthin's tumor, also known as papillary cystadenoma lymphomatosum, is a benign tumor that is almost exclusively seen in the parotid gland. It is the second most common tumor of the parotid gland, accounting for about 10% of all parotid gland tumors. This tumor typically presents as a painless, slow-growing mass in the parotid gland, most commonly in older males. It is characterized by cystic spaces lined by oncocytic epithelial cells and lymphoid tissue. Although it can occur in other salivary glands, it is predominantly found in the parotid gland.

Mucoepidermoid carcinoma is the most common malignant salivary gland tumor. This type of tumor is characterized by a mixture of mucous-secreting cells and epidermoid cells. It can occur in both major and minor salivary glands and is typically low-grade, but can also be high-grade. Mucoepidermoid carcinoma often presents as a painless mass and can cause facial nerve paralysis if it involves the facial nerve. Treatment usually involves surgical removal of the tumor, with or without radiation therapy depending on the grade and stage of the tumor.

A hemangioma is a non-epithelial tumor that can occur in the salivary gland. It is a benign tumor made up of blood vessels. This tumor is not cancerous and usually does not cause any symptoms or complications. It can be treated if necessary, but often does not require any treatment.

Acinic cell adenocarcinoma is a type of cancer that commonly occurs in the parotid gland. The parotid gland is the largest salivary gland located in front of the ear, and it is responsible for producing saliva. This type of adenocarcinoma specifically affects the acinar cells, which are responsible for producing and secreting saliva. Therefore, the correct answer is D. Parotid gland.

A Whartin tumor is a bilateral tumor of the salivary gland. This means that it can occur on both sides of the body, affecting both salivary glands. Oncocyte, Pleomorphic adenoma, and Sjogren syndrome are not specifically associated with bilateral tumors of the salivary gland.

High grade mucoepidermoid carcinoma is a malignant tumor that arises from the salivary glands. It is characterized by a poor prognosis and the ability to metastasize to other parts of the body. It typically presents with painful swelling and mucosal ulceration. However, it is not commonly misdiagnosed clinically as squamous cell carcinoma (sq. c .c).

The correct answer is B. Palate followed by upper lip. This means that the incidence of S.G tumors in minor S.G is highest in the palate and then followed by the upper lip.

The correct answer is C. Occurring at the different time. Bilateral tumor refers to the presence of tumors in both glands or organs. When the tumors occur metachronously, it means that they develop at different times. This is in contrast to synchronous tumors, which occur at the same time. Therefore, option C accurately describes the occurrence of bilateral tumors at different time intervals.

The correct answer is D. Proliferation of salivary epithelium associated with lymphoid tissue formation. Warthin tumor, also known as papillary cystadenoma lymphomatosum, is a benign tumor that arises from the salivary glands. It is characterized by the proliferation of salivary epithelium along with the formation of lymphoid tissue. This theory suggests that the tumor develops from the metaplastic transformation of the salivary duct epithelium, which then undergoes proliferation and forms cystic spaces lined by epithelial cells. The presence of lymphoid tissue within the tumor is a key feature and supports this theory. Smoking and EBV have been proposed as possible risk factors, but they are not considered the primary pathogenesis of Warthin tumor.