title: Appendicitis complicated by appendiceal metastasis via peritoneal dissemination from lung cancer.
abstract: Peritoneal disseminations from lung cancer are difficult to detect during the patient's clinical course. Therefore, complications of this condition are unclear. We report a case in which peritoneal dissemination from lung cancer complicated appendicitis. A 74-year-old man with lung cancer who was receiving maintenance therapy presented at our hospital because of abdominal pain. It was the seventh day after the 14th cycle of maintenance therapy with bevacizumab. He was diagnosed with acute appendicitis. The resected appendix showed acute appendicitis complicated by appendiceal metastasis from lung cancer. Adenocarcinoma was observed predominantly in the serous membrane from the neck to the tail of the appendix. The distribution of the adenocarcinoma was diffuse. Peritoneal dissemination was considered the route of metastasis. He was admitted to the palliative care unit 10 months after appendectomy. Appendiceal metastasis via peritoneal dissemination from lung cancer complicated appendicitis in our patient who had been receiving bevacizumab.
authors: Department of Respiratory Disease Chugoku Rousai General Hospital Hiroshima Japan.
authors: Naoki
authors: N
authors: Shiota
authors: Department of Respiratory Disease Chugoku Rousai General Hospital Hiroshima Japan.
authors: Makoto
authors: M
authors: Furonaka
authors: Department of Respiratory Disease Chugoku Rousai General Hospital Hiroshima Japan; Department of Critical Care Chugoku Rousai General Hospital Hiroshima Japan.
authors: Kazuya
authors: K
authors: Kikutani
authors: Department of Respiratory Disease Chugoku Rousai General Hospital Hiroshima Japan.
authors: Keiko
authors: K
authors: Haji
authors: Department of Surgery Chugoku Rousai General Hospital Hiroshima Japan.
authors: Seiji
authors: S
authors: Fujisaki
authors: Department of Pathology Chugoku Rousai General Hospital Hiroshima Japan.
authors: Toshihiro
authors: T
authors: Nishida
keywords: appendicitis; bevacizumab; lung cancer; metastasis; peritoneal dissemination