Case of the Week
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Case History
67 y/o male with B/L renal masses, found incidentally when undergoing lung cancer screening. Left mass measures 3.3 cm on gross section. Fumarate hydratase (FH) immunohistochemistry was done, and it was retained.
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Case History
A 52-year-old man with HIV presents with weight loss and supraclavicular mass. Biopsy shows large, atypical cells with the following phenotype: CD45+, CD20-, PAX5 weak, CD3-, CD15-, CD138-, EBER-ISH+. H&E and stains for CD30 and CD79a are shown.
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Case History
The images below are from a fine needle aspiration of a cord-like subcutaneous mass along the nasolabial fold.
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Case History
A 51-year-old man presents with AKI and proteinuria. Figures A & B show light microscopy. IF and EM studies are unremarkable.
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Case History
A 60 y/o female, prior smoker, with a 2x1 cm left parotid nodule noted 3 months prior.
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Case History
50-year-old female endometrial currettings due to abnormal uterine bleeding. Patient has a history of triple-negative breast cancer.
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Case History
A 60 year-old-male presented with a lytic lesion of the C3 spinal vertebra. What is the diagnosis? Identify the immunostain in Figure D.
