Introduction A fit, 57-year-old man admitted with chest pain and haemoptysis turned out to have a primary tumour in the left lung. Case presentation In this 57-year-old Caucasian man, the diagnosis followed a computed tomography scan and histopathological evidence gained post-resection. The biopsy showed a uniform, spindle shape with focal pleomorphism which was suggestive of lung carcinosarcoma. Conclusions The authors report this case in literature and discuss how a rare malignant tumour can be found in those presenting with trivial chest symptoms.
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