This article, published in the Qatar Medical Journal, discusses a rare case of thoracic actinomycosis in a patient with bronchopulmonary sequestration (BPS), a congenital lung anomaly. The patient, a 48-year-old man, presented with symptoms of productive cough and hemoptysis, and was found to have an intralobular BPS on chest computed tomography (CT). Surgical intervention confirmed the diagnosis of BPS and revealed an underlying actinomycosis infection. The article emphasizes the importance of early identification and accurate diagnosis of such cases, as well as the need to consider atypical pathogens like Actinomyces in BPS patients. [Extracted from the article]