Fibroma of the tendon sheath of the neck.

Abstract Introduction Fibroma of the tendon sheath (FTS) is a rare benign tumour typically occurring in the extremities, but very rarely involving in the neck. Case report A 22-year-old male presented with a large painless mass of the right oropharynx. Magnetic resonance imaging (MRI) showed a well-circumscribed 7 cm lesion in the right prestyloid space. The lesion was completely removed surgically. Histopathological examination revealed a fibroma of the tendon sheath of the stylohyoid muscle. Discussion These tumours generally arise in the extremities of adults. To our knowledge, this is the first reported case of FTS in the neck.