title: Tumor-to-tumor metastasis: lung adenocarcinoma metastasizing to vestibular schwannoma suspected on preoperative [18F]-fluorodeoxyglucose positron emission tomography imaging.
abstract: BACKGROUND
  Tumor-to-tumor metastasis is a rare but well-known phenomenon. Among the more than 100 intracranial tumors reported, meningiomas are the most common type, whereas schwannoma is extremely rare.
  
  
  METHODS
  We describe a 75-year-old woman with a lung adenocarcinoma that metastasized to a vestibular schwannoma. Tumor-to-tumor metastasis was indicated by preoperative [(18)F]-fluorodeoxyglucose positron emission tomography.
  
  
  CONCLUSIONS
  [(18)F]-fluorodeoxyglucose positron emission tomography is effective in the preoperative diagnosis of rapidly growing cerebellopontine angle tumors in patients with a history of malignancy.
authors: Department of Neurosurgery, University of Tokyo Hospital, Tokyo, Japan.
authors: Yuta
authors: Y
authors: Fukushima
authors: Takahiro
authors: T
authors: Ota
authors: Akitake
authors: A
authors: Mukasa
authors: Hiroshi
authors: H
authors: Uozaki
authors: Kensuke
authors: K
authors: Kawai
authors: Nobuhito
authors: N
authors: Saito
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000556:secondary*; D000368:Aged; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D016609:Neoplasms, Second Primary / Q000000981:diagnostic imaging / Q000556:secondary*; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging / Q000473:pathology*; D049268:Positron-Emission Tomography; D011300:Preoperative Care; D019275:Radiopharmaceuticals
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18