True regarding Warthin’s tumor: (Repeat)
**Core Concept**
Warthin's tumor is a benign salivary gland neoplasm, specifically a type of pleomorphic adenoma that arises from the parotid gland. It is characterized by its unique histological features, including oncocytic and myoepithelial cells.
**Why the Correct Answer is Right**
Warthin's tumor is often associated with smoking and is considered to be a tumor of the parotid gland, with a slight male predilection. The tumor is composed of oncocytic cells, which are large and polygonal, and myoepithelial cells, which are spindle-shaped. The combination of these cell types gives the tumor its characteristic pleomorphic appearance.
**Why Each Wrong Option is Incorrect**
**Option A:** This option may be incorrect as it is not specific to Warthin's tumor. Other types of salivary gland tumors, such as pleomorphic adenomas or mucoepidermoid carcinomas, may also be associated with smoking.
**Option B:** This option may be incorrect as Warthin's tumor is not typically associated with aggressive behavior or a high risk of metastasis. It is a benign tumor that is generally slow-growing and non-invasive.
**Option C:** This option may be incorrect as the parotid gland is the primary site of Warthin's tumor, but it can also arise in other salivary glands, such as the submandibular or sublingual glands.
**Option D:** This option may be incorrect as while Warthin's tumor is a type of pleomorphic adenoma, not all pleomorphic adenomas are Warthin's tumors. The specific histological features and clinical associations of Warthin's tumor distinguish it from other types of pleomorphic adenomas.
**Clinical Pearl / High-Yield Fact**
Warthin's tumor is often associated with smoking, and patients with this tumor should be asked about their smoking history. Additionally, the tumor's characteristic pleomorphic appearance can be distinguished from other types of salivary gland tumors on histological examination.
**Correct Answer:**