Zamani Farhad, Sohrabi Masoudreza
1. GastoIntestinal and Liver Disease Research Centre(GILDRC), Iran University of Medical Sciences, Tehran, Iran.
Middle East J Dig Dis. 2015 Jan;7(1):41-4.
Actinomycosis is a rare and chronic infectious disease caused by a non-spore gram- positive, anaerobic bacterium that rarely infects the colon, in particular the left colon. A 53-year-old woman was referred to us due to chronic abdominal pain, bloating, a few episodes of bloody-mucous rectal discharge, and change of bowel habits. Her medical history and physical examination were unremarkable. Colonoscopy revealed a polypoid mass like lesion located 20 cm proximal to the anal verge above the rectosigmoid junction. Several biopsy samples were taken. Histopathological evaluation showed actinomycosis infection. Consequently the patient was treated with intravenous and then six months oral penicillin. Her complaints and colonic mass resolved totally. Diagnosis of colonic actinomycosis is not an easy task. It is advisable to keep this infection in mind among the differential diagnoses of unusual abdominal masses. Colonoscopy and histopathological examination can be the preferred modality for diagnosis of colonic actinomycosis infection.
放线菌病是一种由非芽孢革兰氏阳性厌氧菌引起的罕见慢性传染病，该菌很少感染结肠，尤其是左半结肠。一名53岁女性因慢性腹痛、腹胀、数次血性黏液性直肠分泌物及排便习惯改变前来就诊。她的病史和体格检查均无异常。结肠镜检查发现距肛缘20 cm处、直肠乙状结肠交界处上方有一个息肉样肿物。采集了多份活检样本。组织病理学评估显示为放线菌感染。因此，该患者先接受了静脉注射青霉素治疗，随后口服青霉素6个月。她的症状和结肠肿物完全消失。结肠放线菌病的诊断并非易事。在鉴别诊断不寻常的腹部肿物时，建议考虑这种感染。结肠镜检查和组织病理学检查可能是诊断结肠放线菌感染的首选方法。
