Why the study?
To highlight that primary pulmonary undifferentiated pleomorphic sarcoma can be a differential diagnosis of pulmonary cavitary mass lesions.
Primary pulmonary undifferentiated pleomorphic sarcoma should be considered in the differential diagnosis of pulmonary cavitary mass lesions.
May warrant inclusion of undifferentiated pleomorphic sarcoma in differentials for cavitary lung masses; extends sparse case literature on this rare entity.
We report a case of a 56-year-old man with persistent right upper lobe cavitary mass. A chest computed tomography scan showed about 4-cm-sized mass with internal low attenuation and peripheral enhancement in right upper lobe apical segment. The lesion size increased over 1 month. Right upper lobectomy was performed with the intention to treat the lesion. Pathological examination showed primary pulmonary undifferentiated pleomorphic sarcoma. We describe this rare lung disease to remind that primary pulmonary undifferentiated pleomorphic sarcoma could be the differential diagnosis of pulmonary cavitary mass lesions.
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Kang et al. (2021) studied this question.
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