title: Multiple skeletal muscle metastases from poorly differentiated gastric adenocarcinoma.
abstract: We report here a rare case of gastric carcinoma with multiple intramuscular metastases. A 71-year-old man presented with rapidly evolving swelling of his left thigh and severe pain. Three years earlier, he had undergone neoadjuvant chemotherapy followed by gastrectomy for advanced gastric cancer. A computed tomography scan showed unusual swellings in multiple skeletal muscles with no vessel or bone invasion. Importantly, the affected muscles did not contain distinct masses but were diffusely enlarged. Pathological examination of an open muscle biopsy showed a poorly differentiated adenocarcinoma, supporting a diagnosis of gastric cancer metastases in multiple skeletal muscles.
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. miraiyosouzu1005@gmail.com.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Koga
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. y-baba@kumamoto-u.ac.jp.
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Baba
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. katto1982@hotmail.co.jp.
authors.forename: Kazuto
authors.initials: K
authors.lastname: Harada
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. peugeolf_ksk_0930@yahoo.co.jp.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kosumi
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. mandibula9922@hotmail.com.
authors.forename: Hironobu
authors.initials: H
authors.lastname: Shigaki
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. kurashige102@yahoo.co.jp.
authors.forename: Junji
authors.initials: J
authors.lastname: Kurashige
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. taka1516@kumamoto-u.ac.jp.
authors.forename: Takatsugu
authors.initials: T
authors.lastname: Ishimoto
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. maiwa217@kumamoto-u.ac.jp.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Iwatsuki
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. miyamotoyuji@gmail.com.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Miyamoto
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. kairou@kumamoto-u.ac.jp.
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Sakamoto
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. nyoshida@kumamoto-u.ac.jp.
authors.forename: Naoya
authors.initials: N
authors.lastname: Yoshida
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan. hdobaba@kumamoto-u.ac.jp.
authors.forename: Hideo
authors.initials: H
authors.lastname: Baba
keywords: Gastric carcinoma; Metastasis; Skeletal muscle tumor