Computed Tomographic Demonstration of a Fish Bone in Abdominal Actinomycosis: Report of a Case


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 × 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.

This is a preview of subscription content, access via your institution.


  1. 1

    JG Gonzalez RR Gonzalez JV Patino AT Garcia CP Alvarez CS Pedrosa (1988) ArticleTitleCT findings in gastrointestinal perforation by ingested fish bones J Comput Assist Tomogr 12 88–90 Occurrence Handle1:STN:280:BieD1cfgvVw%3D Occurrence Handle3335676

    CAS  PubMed  Google Scholar 

  2. 2

    RS Berardi (1979) ArticleTitleAbdominal actinomycosis Surg Gynecol Obstet 149 257–66 Occurrence Handle1:STN:280:CSaB38rovFA%3D Occurrence Handle380028

    CAS  PubMed  Google Scholar 

  3. 3

    G Van Olmen MF Larmuseau K Geboes P Rutgeerts F Penninckx G Vantrappen (1984) ArticleTitlePrimary gastric actinomycosis: a case report and review of the literature Am J Gastroenterol 79 512–6 Occurrence Handle1:STN:280:BiuB2Mzmslw%3D Occurrence Handle6377875

    CAS  PubMed  Google Scholar 

  4. 4

    MC Olson TC Demos JP Tamayo (1993) ArticleTitleActinomycosis of the retroperitoneum and an extremity: CT features Abdom Imaging 18 295–7 Occurrence Handle1:STN:280:ByyB1cvgt1Q%3D Occurrence Handle8508099

    CAS  PubMed  Google Scholar 

  5. 5

    HK Ha HJ Lee H Kim HJ Ro YH Park SJ Cha et al. (1993) ArticleTitleAbdominal actinomycosis: CT findings in 10 patients Am J Roentgenol 161 791–4 Occurrence Handle1:STN:280:ByyA1cznvV0%3D

    CAS  Google Scholar 

  6. 6

    LA Harris JJ DeCosse A Dannenberg (1989) ArticleTitleAbdominal actinomycosis: evaluation by computed tomography Am J Gastroenterol 84 198–200 Occurrence Handle1:STN:280:BiaC3s3ltFQ%3D Occurrence Handle2636845

    CAS  PubMed  Google Scholar 

  7. 7

    HA Allen Suffix3rd JC Scatarige MH Kim (1987) ArticleTitleActinomycosis: CT findings in six patients Am J Roentgenol 149 1255–8

    Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Yuji Nimura.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Yamada, H., Kondo, S., Kamiya, J. et al. Computed Tomographic Demonstration of a Fish Bone in Abdominal Actinomycosis: Report of a Case. Surg Today 36, 187–189 (2006).

Download citation

Key words

  • Fish bone
  • Actinomycosis
  • Inflammatory pseudotumor