Abdominal Actinomycosis Mimicking Malignancy: A Case Report

Actinomycosis is an uncommon chronic granulomatous disease caused by filamentous, gram-positive anaerobic bacteria. Actinomyces Israeli is the major human pathogen. They are commensal inhabitants of the oral cavity and intestinal tract but acquire invasion of breached or necrotic tissue. We report a...

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Main Authors: Rajani Gubbala, Ponnuswamy Arumugam, Suseela Kodandapani, Thammineedi Subramanyeshwar Rao
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2025-01-01
Series:Amrita Journal of Medicine
Subjects:
Online Access:https://doi.org/10.4103/AMJM.AMJM_51_24
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author Rajani Gubbala
Ponnuswamy Arumugam
Suseela Kodandapani
Thammineedi Subramanyeshwar Rao
author_facet Rajani Gubbala
Ponnuswamy Arumugam
Suseela Kodandapani
Thammineedi Subramanyeshwar Rao
author_sort Rajani Gubbala
collection DOAJ
description Actinomycosis is an uncommon chronic granulomatous disease caused by filamentous, gram-positive anaerobic bacteria. Actinomyces Israeli is the major human pathogen. They are commensal inhabitants of the oral cavity and intestinal tract but acquire invasion of breached or necrotic tissue. We report a 34-year-old female with intra-abdominal actinomycosis with extensive involvement of abdomen mimicking malignancy. She presented with abdominal pain and mass post laparoscopic cholecystectomy and underwent multiple biopsies which were inconclusive and was treated with antimicrobials with no relief. She was referred to our center suspecting malignancy. Biopsy was repeated and histopathology with special stains revealed actinomycosis. She was treated with intravenous crystalline penicillin of 6 million units thrice daily as an inpatient for a week. She was discharged on oral amoxicillin 1 g twice daily. The total antibiotic duration was 12 months since she had extensive disease. She was on regular follow-up and her lesions gradually regressed.
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issn 0975-9662
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publishDate 2025-01-01
publisher Wolters Kluwer Medknow Publications
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series Amrita Journal of Medicine
spelling doaj-art-9fa1d81f4e254bdfa1eaef58d58d83632025-08-20T03:01:54ZengWolters Kluwer Medknow PublicationsAmrita Journal of Medicine0975-96622772-28052025-01-01211262810.4103/AMJM.AMJM_51_24Abdominal Actinomycosis Mimicking Malignancy: A Case ReportRajani GubbalaPonnuswamy ArumugamSuseela KodandapaniThammineedi Subramanyeshwar RaoActinomycosis is an uncommon chronic granulomatous disease caused by filamentous, gram-positive anaerobic bacteria. Actinomyces Israeli is the major human pathogen. They are commensal inhabitants of the oral cavity and intestinal tract but acquire invasion of breached or necrotic tissue. We report a 34-year-old female with intra-abdominal actinomycosis with extensive involvement of abdomen mimicking malignancy. She presented with abdominal pain and mass post laparoscopic cholecystectomy and underwent multiple biopsies which were inconclusive and was treated with antimicrobials with no relief. She was referred to our center suspecting malignancy. Biopsy was repeated and histopathology with special stains revealed actinomycosis. She was treated with intravenous crystalline penicillin of 6 million units thrice daily as an inpatient for a week. She was discharged on oral amoxicillin 1 g twice daily. The total antibiotic duration was 12 months since she had extensive disease. She was on regular follow-up and her lesions gradually regressed.https://doi.org/10.4103/AMJM.AMJM_51_24abdominal painactinomycosisantibiotic durationintra-abdominal massmalignancy
spellingShingle Rajani Gubbala
Ponnuswamy Arumugam
Suseela Kodandapani
Thammineedi Subramanyeshwar Rao
Abdominal Actinomycosis Mimicking Malignancy: A Case Report
Amrita Journal of Medicine
abdominal pain
actinomycosis
antibiotic duration
intra-abdominal mass
malignancy
title Abdominal Actinomycosis Mimicking Malignancy: A Case Report
title_full Abdominal Actinomycosis Mimicking Malignancy: A Case Report
title_fullStr Abdominal Actinomycosis Mimicking Malignancy: A Case Report
title_full_unstemmed Abdominal Actinomycosis Mimicking Malignancy: A Case Report
title_short Abdominal Actinomycosis Mimicking Malignancy: A Case Report
title_sort abdominal actinomycosis mimicking malignancy a case report
topic abdominal pain
actinomycosis
antibiotic duration
intra-abdominal mass
malignancy
url https://doi.org/10.4103/AMJM.AMJM_51_24
work_keys_str_mv AT rajanigubbala abdominalactinomycosismimickingmalignancyacasereport
AT ponnuswamyarumugam abdominalactinomycosismimickingmalignancyacasereport
AT suseelakodandapani abdominalactinomycosismimickingmalignancyacasereport
AT thammineedisubramanyeshwarrao abdominalactinomycosismimickingmalignancyacasereport