ArticleCureus2026
Diffuse Large B-cell Lymphoma in a Patient With Refractory Perinephric Fluid Collection and Pleural Effusion: A Case Report.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Perinephric fluid collections have a broad differential diagnosis and may be difficult to characterize by imaging or fluid analysis. Diffuse large B-cell lymphoma (DLBCL) typically presents as mass-like lesions in nodal or extranodal sites but may rarely present as isolated fluid collections. We report a 53-year-old woman with acute right flank pain after minor trauma. Imaging showed a large right perinephric fluid collection extending into the retroperitoneum and pleural cavity without an identifiable mass. Fluid studies and lymphangiography did not identify a clear underlying etiology. Despite intervention for persistent high-output drainage, the patient developed prolonged fever and was ultimately diagnosed with DLBCL following biopsy of a newly developed cheek lesion. This case highlights an atypical presentation of DLBCL in a patient with a persistent perinephric fluid collection and underscores the importance of considering malignancy in unexplained, refractory fluid collections.
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