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Leiomyosarcomas are a group of rare heterogeneous malignant tumours arising from smooth muscle mesenchyme The tumour may arise at any site however the uterus gastrointestinal tract and soft tissues are the most frequently affected Within the lung the disease most commonly occurs as a consequence of distant metastasis however may originate within the lung as a discrete disease entity which is exceptionally rare We present the case of a 66 year old gentleman who presented with dyspnoea and was found to have an incidental pulmonary nodule in which a biopsy subsequently confirmed an extremely rare primary pulmonary leiomyosarcoma Leiomyosarcomas are a group of heterogeneous tumours which arise from the mesenchyme of smooth muscle
