October 11, 2025Frontiers in MedicineOpen Access

Case Report: A rare case of pulmonary actinomycosis and concomitant small cell lung cancer

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Pulmonary actinomycosis was confirmed after CT-guided biopsy, leading to effective treatment with penicillin.
The right lung nodule, initially overlooked, increased in size and was later diagnosed as small cell lung cancer.
Differentiating between infectious and neoplastic pulmonary conditions is crucial for appropriate management.
This case emphasizes the rarity and diagnostic challenges of concurrently occurring pulmonary actinomycosis and lung cancer.

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Case report reveals pulmonary actinomycosis masked as lung cancer, highlighting importance of diagnosis.

Fang et al. (2025) studied this question.

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