alexa Pulmonary cavitary mass containing a mural nodule: differential diagnosis between intracavitary aspergilloma and cavitating lung cancer on contrast-enhanced computed tomography.
Medicine

Medicine

Internal Medicine: Open Access

Author(s): Park Y, Kim TS, Yi CA, Cho EY, Kim H,

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Abstract AIM: The objective of this study was to identify whether there were any significant differences in the computed tomography (CT) findings of an intracavitary aspergilloma and a cavitating lung cancer containing a mural nodule. MATERIALS AND METHODS: The CT and histopathological findings of 12 patients (male:female ratio 3:9; aged 51-76 years) with cavitating lung cancer containing a mural nodule and 26 patients (male:female ratio 14:12; aged 29-72 years) with intracavitary aspergilloma were retrospectively reviewed. RESULTS: The mural nodules within cavitating lung cancer were more enhanced (p<0.001) and showed a nondependent location more frequently (p=0.012) than those of intracavitary aspergillomas. The cavitary walls were thicker in cavitating lung cancer (mean 5.8mm thick) than those in intracavitary aspergillomas (mean 2.6mm thick; p=0.035). Adjacent bronchiectasis and volume decrease of the involved lobe were observed more frequently in intracavitary aspergillomas than in cavitating lung cancers (p<0.001 and p=0.008, respectively). CONCLUSION: Whether a mural nodule within a cavitary lesion is contrast-enhanced or not is one of the most important features in making a differential diagnosis between an intracavitary aspergilloma and a cavitating lung cancer. Assessment of dependent location of a mural nodule within the cavity and wall thickness of the cavity itself can also be helpful for differentiation. This article was published in Clin Radiol and referenced in Internal Medicine: Open Access

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