BACKGROUND
A 46-year-old man is referred to you because a chest radiograph incidentally depicted poorly defined nodular opacities in upper zones of the lungs. This man is a nonsmoker and entirely asymptomatic. He has a history of renal transplantation and is currently receiving immunosuppressive therapy.
High-resolution CT shows bilateral fluffy areas of ground-glass attenuation in a nodular configuration. Concern regarding an opportunist infection prompts further investigation. Radionuclide imaging studies of the thorax reveal the cause of his problem.
What is the diagnosis?
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Hint
The imaging findings are more than 100 HU on the Hounsfield scale
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Author:
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John Ronald, MD, FRCPC, University of Manitoba, and Stephen Corne, MD, FRCPC, Health Sciences Centre, Winnipeg, Manitoba
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eMedicine Editor:
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Sat Sharma, MD, Associate Professor, University of Manitoba, Department of Medicine, Division of Pulmonary Medicine
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eMedicine Case
