Pulmonary actinomycosis - the great imitator

Area of Science:

• Pulmonology
• Infectious Diseases
• Radiology

Background:

• Pulmonary actinomycosis is rare, accounting for only 15% of all cases.
• Clinical and radiological findings are non-specific, often leading to misdiagnosis.
• Common misdiagnoses include tuberculosis, lung cancer, and lung abscess.

Observation:

• A 77-year-old farmer presented with massive hemoptysis.
• Chest CT revealed spicular consolidation in the right lung, raising suspicion for lung cancer.
• The diagnostic process was challenging due to non-specific symptoms.

Findings:

• The patient was diagnosed with pulmonary actinomycosis.
• The condition was successfully treated.
• Complete clinical and radiological regression was achieved.

Implications:

• This case underscores the importance of considering actinomycosis in the differential diagnosis of pulmonary masses.
• Early and accurate diagnosis is crucial for effective treatment and patient outcomes.
• Pulmonary actinomycosis is a treatable condition with a favorable prognosis upon appropriate management.