Loculated pleural effusion on CXR

Discussion:

A pleural-based mass, or in this case lobulated pleural effusion, classically demonstrate one border that is well defined and one that is not which helps differentiate it from pulmonary based pathology. A loculated pleural effusion can mimic a mass hence is sometimes known as a pleural pseudotumor.

Case courtesy of Dr Nivene Saad.

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