Solitary fibrous tumor of parotid gland: a case report and short review of literature

F. Goker, C. Mazzucato, M. Maggioni, A. Baj, A.B. Giannì, G. Beltramini, A. Russillo, F.R.P. Buccellato, D.S. Rossi, C. Mortellaro, M. Del Fabbro

Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy. diego.rossi@policlinico.mi.it

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• Regenerative Medicine

OBJECTIVE: This case report represents a solitary fibrous tumor, which is a very rare neoplasm in the parotid gland.

CASE PRESENTATION: 80-year-old Caucasian female patient with palpable, immobile, painless, slow growing, semi-rigid-elastic neoplasm in the left parotid gland, that was existing for four months. There were no signs of inflammation and facial paralysis. The tumor was initially interpreted as a salivary gland neoplasm of uncertain origin. Fine needle aspiration was performed 2 times; however, the precise diagnosis was challenging. The tumor was excised, regional lymphadenectomy was performed. Morphological and immunophenotypical findings were consistent with solitary fibrous tumor of parotid gland. Currently, the patient is under regular follow-up period at 9 months with no evidence of metastasis or recurrence.

CONCLUSIONS: Although very rare, solitary fibrous tumor (SFT) should be suspected in cases of slow growing, solid, well-defined nodules of the parotid gland. The SFT of the parotid gland are usually benign tumors, however there is a low risk of recurrency and malignant behavior with metastatic potential. Complete resection of the tumor should be performed since it is crucial for management without any recurrence.

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