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Related Concept Videos

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Bacterial Phylum Actinobacteria

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Abdominal actinomycosis.

M C Mueller1, S Ihrler, C Degenhart

  • 1Department of Infectious Diseases, Medizinische Poliklinik, University Hospital of Munich, Campus Innenstadt, Germany.

Infection
|April 2, 2008
PubMed
Summary
This summary is machine-generated.

A rare abdominal actinomycosis case highlights the diagnostic challenge of this chronic bacterial infection. Early recognition and treatment are crucial for successful patient outcomes.

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Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Surgical Pathology

Background:

  • Actinomycosis is a rare, chronic granulomatous infection caused by filamentous, gram-positive, anaerobic bacteria.
  • Abdominal actinomycosis often presents with non-specific symptoms, leading to delayed diagnosis.

Observation:

  • A 59-year-old healthy male presented with a slowly growing, painful left lower abdominal mass.
  • Abdominal MRI revealed a diffuse contrast-enhancing mass infiltrating the peritoneal cavity.
  • Histopathology confirmed chronic-fibrosing, granulocytic, abscess-forming inflammation with Gram- and PAS-positive bacteria.

Findings:

  • The patient was diagnosed with chronic abdominal actinomycosis.
  • Surgical excision followed by a 7-month course of penicillin resulted in a favorable outcome.
  • The patient remained well one year post-surgery.

Implications:

  • Abdominal actinomycosis requires a high index of suspicion due to its rarity and nonspecific presentation.
  • Definitive diagnosis often relies on histopathological examination after surgical exploration for suspected neoplasms.
  • Prompt antibiotic therapy, particularly penicillin, is essential for managing actinomycosis.