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What is an ill defined opacity of the lung?

An ill-defined opacity of the lung is an abnormal area on a chest X-ray or other imaging study that is not clearly defined or has indistinct borders. This can be caused by a variety of conditions, including:

* Pneumonia

* Tuberculosis

* Lung cancer

* Sarcoidosis

* Interstitial lung disease

* Metastasis

Further imaging studies, such as a CT scan or MRI, may be needed to determine the exact cause of the opacity and guide appropriate treatment.

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