Surgical Pathology Criteria

Pyothorax Associated Lymphoma

Differential Diagnosis

Both are EBV positive. One HHV8+ pyothorax associated lymphoma has been reported by O'Donovan et al.

Pyothorax Associated Lymphoma Primary Effusion Lymphoma
Associated with chronic inflammation No association with inflammation
No association with immunosuppression Majority associated with immunosuppression
HHV8 negative HHV8 positive
Pleural mass No mass lesion

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