Which tumor is also known as papillary cystadenoma lymphomatosum?

The tumor known as papillary cystadenoma lymphomatosum is more commonly referred to as a Warthin tumor. This benign salivary gland tumor typically occurs in the parotid gland and is characterized by its cystic nature and the presence of lymphoid stroma.

Warthin tumors can often be bilateral and have a gender predisposition, being more common in males. The histological features include a dual layer of epithelial cells lining cystic spaces and associated lymphoid tissue, which contributes to its unique nomenclature. The connection to lymphoid tissue is why it’s referred to as "lymphomatosum" in its alternative name.

The other types of tumors listed do not share the same characteristics or nomenclature. Lateral minijovial carcinoma, mucoepidermoid tumor, and adenoid cystic carcinoma are distinct entities with different histological and clinical features compared to Warthin tumor, which is confirmed by their differing locations, cellular compositions, and pathological behaviors. The specificity of the Warthin tumor as papillary cystadenoma lymphomatosum makes it a key identification point in pathology related to salivary gland tumors.