Solitary fibrous tumour of the submandibular gland: Novel insights from clinical practice on a close mimicker of pleomorphic adenoma and a diagnostic challenge for the cytopathologist.

Spindle cell lesions of the salivary glands are rare and account for less than 3% of the salivary gland aspirates. A definitive classification of salivary gland neoplasms by fine needle aspiration is possible for the most common lesions but remains a challenge for the less common entities. We present a case of a 72-year-old male with a solitary fibrous tumour (SFT) of the submandibular gland mimicking a myoepithelial-rich pleomorphic adenoma (PA). In this article, we discuss novel insights that help differentiate SFT from PA and other spindle cell lesions.