title: Forearm muscle metastasis as an initial clinical manifestation of lung cancer.
abstract: Skeletal muscle metastasis from lung cancer is rare, and the optimal treatment strategy is unknown. A 37-year-old man presented with painful swelling in the left forearm. A biopsy of the swollen muscle disclosed the presence of pulmonary adenocarcinoma. The patient was treated with systemic chemotherapy and radiotherapy; radiographic examination revealed a marked reduction of the tumor in the primary site and muscle metastasis. Skeletal muscle metastasis as a mode of presentation of primary lung cancer is an unusual phenomenon.
authors.affiliation: Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Shouwa-machi, Maebashi, Gunma, Japan. kkaira1970@yahoo.co.jp
authors.forename: Kyoichi
authors.initials: K
authors.lastname: Kaira
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Ishizuka
authors.forename: Noriko
authors.initials: N
authors.lastname: Yanagitani
authors.forename: Noriaki
authors.initials: N
authors.lastname: Sunaga
authors.forename: Takafumi
authors.initials: T
authors.lastname: Tsuchiya
authors.forename: Takeshi
authors.initials: T
authors.lastname: Hisada
authors.forename: Masatomo
authors.initials: M
authors.lastname: Mori
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary*; D000328:Adult; D005542:Forearm; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D019042:Muscle Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary*; D049268:Positron-Emission Tomography