Acute anorectal abscess caused by a foreign bodies is a great rarity. In literature only isolated cases were described. We observed such a case when found a fish bone in an abscess cavity. Diagnostics of such cases is difficult due to to absence of high-technological methods of examination in routine circumstances. Patients are often discharged with the diagnosis acute paraproctitis excluding peculiarirites of pathogenesis of this disease.
Analysis of literature shows that foreign bodies should be attributed to etiological factors of anorectal abscesses, or – at least – to significant risk factors of their occurence.