Recurrent fibrous solitary tumor of the parotid gland with satellite location: imaging, clinical and histological findings of rare entity.

• Main Authors: Annalisa Vitale, MD, Chiara Paolella, MD, Giuseppina Rossi, MD, Luigi Cacace, MD, Remo Palladino, MD, Andrea Manto, MD
• Format: Article
• Language: English
• Published: Elsevier 2021-10-01
• Series: Radiology Case Reports
• Subjects: Parotid gland; Solitary fibrous tumor; Benign salivary gland tumors; Satellite location; Magnetic resonance imaging; Immunohistochemical
• Online Access: http://www.sciencedirect.com/science/article/pii/S1930043321004799

Fibrous Solitary Tumors are infrequent neoplasms originating from mesenchymal tissues, most commonly arising from the visceral pleura and frequently exhibiting a benign behavior. Extra-pleural localization is unusual and the site of origin of these tumors from the parenchyma of the parotid gland is considered extremely rare. We report the case of a 66-years old woman with non-painful slow-growing left latero-cervical mass, who underwent a gadolinium-enhanced Magnetic Resonance Imaging showing a mass originating from the deep lobe of the parotid gland extending into the retro-pharyngeal space. After a total parotidectomy with tumor excision, a diagnosis of histologically proven fibrous solitary tumor of the parotid gland was made. Two years later, CT scan showed post-operative recurrence and further satellite localization in the neck, distant from the initial mass. We performed a literature review of the published similar cases, in order to clinicopathological and imaging features of this rare entity.