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Actinomycosis, a sheep in wolves' clothes

V Neijens1, P van Heerde, A van der Heijden

  • 1Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.

Lung Cancer (Amsterdam, Netherlands)
|August 1, 1996
PubMed
Summary

A patient suspected of having lung cancer was actually diagnosed with actinomycosis, a rare bacterial infection. This case highlights the need to consider actinomycosis in lung cancer diagnoses, especially with unusual lesions.

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Radiology

Background:

  • Pulmonary malignancy is a common diagnosis requiring prompt treatment.
  • Radiotherapy is a standard treatment for lung cancer.
  • Diagnostic challenges can arise in differentiating infectious from malignant lung conditions.

Observation:

  • A patient presented with symptoms suggestive of a pulmonary malignancy.
  • The patient was referred for radiotherapy based on initial diagnostic findings.
  • Further investigations revealed an actinomycotic infection, not cancer.

Findings:

  • Actinomycosis can mimic pulmonary malignancy on initial diagnostic evaluations.
  • Chestwall and bony lesions may be present in actinomycosis.
  • Negative diagnostic methods for malignancy warrant further investigation for alternative diagnoses.

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Implications:

  • Early consideration of actinomycosis is crucial in cases of suspected pulmonary malignancy with ambiguous diagnostic results.
  • This case underscores the importance of a broad differential diagnosis in respiratory medicine.
  • Accurate diagnosis of pulmonary infections like actinomycosis prevents unnecessary and potentially harmful treatments such as radiotherapy.