@Radiopaedia: 40yo male with cough and wheeze. What is the diagnosis and the classic imaging sign demonstrated? Case courtesy of Nicoletti D.
Answer and full case images: https://radiopaedia.org/cases/44214
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Aspergilloma | Radiology Case | Radiopaedia.org

Aspergilloma is a fungus ball that develops due to the formation of hyphae inside a lung cyst or an existing cavity (e.g. tuberculosis, sarcoidosis), usually in the upper lobe. 

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Painless right scrotal swelling for two months. No history of trauma, fever or weight loss.
Diagnosis?
Full case https://doi.org/10.53347/rID-149937
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Primary testicular lymphoma | Radiology Case | Radiopaedia.org

The patient underwent right orchiectomy and the histopathology showed Diffuse large B-cell lymphoma. The patient was referred to the medical oncologist for further management. 

Radiopaedia