title: Metastatic masseter muscle tumour: a report of a case.
abstract: Both primary and metastatic malignancies of the masseter muscle are rare. We report a case of metastatic renal cell carcinoma to the masseter muscle. It was incidentally found as a hypervascular mass in carotid angiography for delineating a recurrent metastatic brain tumour. Prior to surgical removal, intravascular embolization via the left facial artery was performed in order to decrease intra-operative bleeding. The tumour was removed with minimum damage to the muscle fibres by the extraoral method, followed by a transient lower lip palsy. Metastatic intramuscular tumours, which are assumed to be due to haematogenous spread, are generally a sign of poor prognosis.
authors.affiliation: Department of Otolaryngology, Toyama Medical and Pharmaceutical University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Y
authors.initials: Y
authors.lastname: Mizukami
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: Y
authors.initials: Y
authors.lastname: Watanabe
authors.forename: N
authors.initials: N
authors.lastname: Kuwayama
mesh_terms: D000792:Angiography; D002292:Carcinoma, Renal Cell / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms; D008279:Magnetic Resonance Imaging; D008297:Male; D008406:Masseter Muscle / Q000473:pathology*; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D014057:Tomography, X-Ray Computed