title: Salivary duct carcinoma with perineural spread to facial canal: F-18 FDG PET/CT detection.
abstract: Salivary duct carcinoma is a highly aggressive malignancy targeting predominantly the parotid gland. It frequently involves the extracranial portion of the facial nerve and has a propensity to metastasize through the temporal bone via perineural spread. The authors present a case of treated parotid malignancy with F-18 FDG PET/CT detecting abnormal radiotracer uptake within the facial canal from perineural tumor recurrence. The positive PET/CT finding was confirmed by subsequent MR examination. Postradiation PET/CT surveillance showed resolution of the perineural metastasis with unfortunate distant ischial bone dissemination.
authors.affiliation: Department of Radiology, Mayo Clinic, Scottsdale, Arizona 85259, USA. nguyen.ba@mayo.edu
authors.forename: Ba D
authors.initials: BD
authors.lastname: Nguyen
authors.forename: Michael C
authors.initials: MC
authors.lastname: Roarke
mesh_terms: D044584:Carcinoma, Ductal / Q000473:pathology*; D005153:Facial Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000556:secondary*; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010525:Peripheral Nerves / Q000473:pathology*; D049268:Positron-Emission Tomography; D012468:Salivary Gland Neoplasms / Q000473:pathology* / Q000532:radiotherapy; D014057:Tomography, X-Ray Computed
chemical_list: D019788:Fluorodeoxyglucose F18