title: Solitary metastasis of bronchogenic adenocarcinoma to the internal auditory canal: a case report.
abstract: We report a patient with an isolated metastasis to the internal auditory canal (IAC) of bronchogenic adenocarcinoma. A 58-yr-old man who had received 6-cycle of chemotherapy under diagnosis of non-small cell lung carcinoma (T4N2M0) two years ago was referred to our department with vertigo, right-sided facial paralysis and right-sided hearing loss. A provisional diagnosis of vestibular schwannoma or meningioma involving right IAC was made from magnetic resonance imaging. The patient underwent a translabyrinthine removal of the tumor. Histopathological study of the resected lesion showed a poorly differentiated adenocarcinoma compatible with bronchogenic origin. The patient died 9 months after surgery from extensive brain metastasis despite postoperative radiation therapy. In patients with a previous history of treatment of malignancy elsewhere in the body, the possibility of IAC metastasis must be considered when an IAC lesion is detected.
authors: Department of Otolaryngology-HNS, Collage of Medicine, The Catholic University of Korea, Seoul, Korea. khchang@catholic.ac.kr
authors: Ki-Hong
authors: KH
authors: Chang
authors: Chang Eun
authors: CE
authors: Song
authors: Jae-Hyun
authors: JH
authors: Seo
authors: Sang-Won
authors: SW
authors: Yeo
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D004428:Ear Neoplasms / Q000556:secondary* / Q000601:surgery; D017809:Fatal Outcome; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged