title: Computed tomographic demonstration of a fish bone in abdominal actinomycosis: report of a case.
abstract: A 53-year-old man who had the habit of consuming fish bones was referred to our clinic because of a suspected malignant abdominal wall tumor. Computed tomography (CT) showed a mass (10 x 5 cm) in continuity with the transverse abdominal muscle, containing a small calcification. A laparotomy was performed with a preoperative diagnosis of an inflammatory mass due to fish bone penetration from the sigmoid colon. A fish bone, measuring 2.3 cm in length, was detected within the tumor by specimen radiography. The pathological findings demonstrated actinomycotic colonies. We herein present the first case of a CT demonstration showing a fish bone in an abdominal mass which was pathologically confirmed to be actinomycosis. Evidence of the presence of a foreign body is valuable for diagnosing inflammatory nodules such as actinomycosis and differentiation from malignancies.
authors.affiliation: Department of Surgery, Division of Surgical Oncology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan.
authors.forename: Hideki
authors.initials: H
authors.lastname: Yamada
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kondo
authors.forename: Junichi
authors.initials: J
authors.lastname: Kamiya
authors.forename: Masato
authors.initials: M
authors.lastname: Nagino
authors.forename: Masahiko
authors.initials: M
authors.lastname: Miyachi
authors.forename: Michio
authors.initials: M
authors.lastname: Kanai
authors.forename: Atsushi
authors.initials: A
authors.lastname: Hayata
authors.forename: Junji
authors.initials: J
authors.lastname: Washizu
authors.forename: Yuji
authors.initials: Y
authors.lastname: Nimura
mesh_terms: D015746:Abdominal Pain / Q000175:diagnosis / Q000209:etiology; D000196:Actinomycosis / Q000000981:diagnostic imaging* / Q000209:etiology; D000818:Animals; D012809:Colon, Sigmoid; D005399:Fishes; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D006104:Granuloma, Plasma Cell / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D006801:Humans; D007813:Laparotomy / Q000379:methods; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D017747:Seafood; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome