Loculated pleural effusion causing pseudomass

Case contributed by Craig Hacking


Rapid AF

Patient Data

Age: 70-75 years
Gender: Female

Right midzone opacity is consistent with pleural fluid loculated in the major fissure. Cardiomegaly, pulmonary venous congestion and diffuse groundglass/interstitial opacities consistent with pulmonary edema. No focal consolidation. Sternotomy wires and mediastinal surgical clips.

Case Discussion

Loculated pleural fluid in a fissure can mimic a pulmonary mass and hence is sometimes referred to as a pseudomass or pseudotumor.

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