Tumor-to-tumor metastasis: lung adenocarcinoma metastasizing to vestibular schwannoma suspected on preoperative [18F]-fluorodeoxyglucose positron emission tomography imaging.

Fukushima, Yuta; Ota, Takahiro; Mukasa, Akitake; Uozaki, Hiroshi; Kawai, Kensuke; Saito, Nobuhito · World Neurosurg · 2012

case_report · Level V

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Abstract

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. 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. [(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.

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