Benign proctology,Rare disease & stoma
- Perianal Actinomycosis: A Surgeon’s Perspective and Review of Literature
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Alexios Dosis, Atia Khan, Henrietta Leslie, Sahar Musaad, Adrian Smith
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Ann Coloproctol. 2021;37(5):269-274. Published online October 29, 2021
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DOI: https://doi.org/10.3393/ac.2021.00332.0047
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- Actinomycosis is a serious suppurative, bacterial infection caused by the gram-positive anaerobic Actinomyces species. Primary perianal actinomycosis is rare and challenging for the colorectal surgeon. We aimed to present our experience and compare this with available literature. All patients with isolated Actinomyces on microbiology reports, between January 2013 and February 2021, were identified and reviewed. Data collection was retrospective based on electronic patient records. The site of infection and treatment strategy were examined. Perianal cases were evaluated in depth. All publications available in the literature were interrogated. Fifty-nine cases of positive actinomycosis cultures were reviewed. Six cases of colonization were excluded. Actinomyces turicensis was the most common organism isolated. Five cases of perianal actinomycosis were identified requiring prolonged antibiotic and surgical therapy. Twenty-one studies, most case reports, published since 1951 were also reviewed. Diagnosis of perianal actinomycosis may be challenging but should be suspected particularly in recurrent cases. Prolonged bacterial cultures in anaerobic conditions are necessary to identify the bacterium. An extended course of antibiotic therapy (months) is required for eradication in certain cases.
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Citations
Citations to this article as recorded by

- Actinomyces Species As Emerging Pathogens: An Observational Study of Clinical Infections and Microbiological Implications
Abraham A Ayantunde, Joanne Kiang, Nadeem S Raja, Javeed Ahmed, Anjali Sanghera, Saumya Venkatesha, Andrew C Ekwesianya
Cureus.2025;[Epub] CrossRef - Imaging of perineal suppurations: a pictorial essay
Mohamed Amine Haouari, Chloé Gallégo, Vincent de Parades, Charlotte Fite, Caroline Touloupas, Alexandre Delpla, Isabelle Bouley-Coletta, Marc Zins
Abdominal Radiology.2025;[Epub] CrossRef - Skin and Soft Tissue Actinomycosis in Children and Adolescents
Salih Demirhan, Erika Orner, Wendy Szymczak, Philip J. Lee, Margaret Aldrich
Pediatric Infectious Disease Journal.2024; 43(8): 743. CrossRef - Colonic actinomycosis masquerading a cancer resulting complete bowel obstruction-a case report
Lilamani Rajthala, Santosh Sirpaili, Krishna Mohan Adhikari
International Journal of Surgery Case Reports.2024; 125: 110563. CrossRef - Letter to the Editor: Actinomyces turicensis Causing Fournier Gangrene
Kaiying Wang, Thomas Zheng Jie Teng, Vishal G. Shelat
Surgical Infections.2022; 23(4): 411. CrossRef - Fungal perianal abscess as the initial presentation of disseminated coccidioidomycosis
Christian Olivo-Freites, Oscar E. Gallardo-Huizar, Christopher J. Graber, Kevin Ikuta
IDCases.2022; 30: e01636. CrossRef
Malignant disease,Benign diesease & IBD,Rare disease & stoma
- Actinomycosis of the Appendix Mimicking Cecal Tumor Treated by Single-Port Laparoscopic Approach
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In Soo Cho, Sung Uk Bae, Hye Ra Jung, Kyung Sik Park, Woon Kyung Jeong, Seong Kyu Baek
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Ann Coloproctol. 2021;37(2):125-128. Published online March 16, 2020
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DOI: https://doi.org/10.3393/ac.2019.08.10.1
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5,663
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130
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4
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5
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Abstract
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- Actinomycosis is an inflammatory disease with various clinical presentations including inflammation and formation of masses. There are several reports suggesting the infiltrative mass-like nature of actinomycosis that is misunderstood as a tumor. A 39-year-old male clinically presented with a fungating mass-like lesion during colonoscopy for healthcare screening. Biopsy was performed for the lesion, and chronic inflammation was diagnosed. Abdominal computed tomography (CT) suggested severe edematous changes in the appendix with an appendicolith, suspected chronic inflammation, and wall thickening of the cecal base, but malignancy could not be definitively ruled out. The patient underwent a laparoscopic single-port cecectomy based on the possibility of cecal cancer. The final biopsy was diagnosed as actinomycosis, and the patient was prescribed antibiotics and showed no recurrence in the follow-up CT scan. We present this rare case of mass-like appendiceal actinomycosis treated with the single-port laparoscopic method.
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Citations
Citations to this article as recorded by

- Appendiceal actinomycosis mimicking malignant tumor: a rare case report
Nathan Khabyeh-Hasbani, Sivan Zino, Elena Dima, Shmuel Avital
Annals of Medicine & Surgery.2024; 86(2): 1076. CrossRef - Laparoscopic Cecectomy for Diseases of the Appendix and Cecum
Muharrem Oner, Maher A. Abbas
Journal of Coloproctology.2023; 43(04): e256. CrossRef - Appendiceal actinomycosis presenting as acute appendicitis: A diagnostic and therapeutic challenge
SP Tendulkar, PA Jain, MG Mehta, S George
Journal of Postgraduate Medicine.2023; 69(1): 63. CrossRef - Benign multicystic mesothelioma of appendiceal origin treated by hyperthermic intraperitoneal chemotherapy: A case report
Suk Jun Lee, Ji Hae Nahm, Jeonghyun Kang, Seung Hyuk Baik, Eun Jung Park
International Journal of Surgery Case Reports.2022; 99: 107665. CrossRef - Abdominal Actinomycosis Abscess Presenting as an Isolated Gastrointestinal Pseudotumor
Danisa Clarrett, Jennifer Michelle Ray, Jason R. Taylor
ACG Case Reports Journal.2021; 8(11): e00672. CrossRef