T-cell large granular lymphocytic leukemia associated with renal cell carcinoma: A case report

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Rationale:T-cell large granular lymphocytic leukemia (T-LGLL) is a rare lymphoproliferative neoplasm of cytotoxic T cells and renal cell carcinoma (RCC) is the most common form of kidney cancer, but T-LGLL associated with RCC has never been reported.Patient concerns:A 58-year-old Chinese male presented with general fatigue and intermittent-remittent fever, accompanied by palpitations and dizziness.Diagnosis:Radical nephrectomy was performed, and a diagnosis of clear cell carcinoma (T1N0M0, I phase) was made based on the postoperative pathology findings. With typical cellular morphology, immunophenotype and T-cell receptor gene rearrangement, a diagnosis of T-LGLL was established.Interventions:After radical nephrectomy, this patient remained asymptomatic without any treatment.Outcomes:To date, the patient is generally in good condition, without complaints of discomfort.Lessons:The coexistence of these 2 entities may not be coincidental, and it is likely that they may share a common pathogenic pathway related to immune dysregulation.

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