Primary Lymphoma of the Kidney: Case Report and Review of Literature

Lymphomatous involvement of the kidney is often seen as a part of disseminated disease. Characteristics of disease are poor prognosis and survival of less than a year after diagnosis. The primary renal lymphoma is very rare, is usually part of general disease, is difficult to diagnostic, and has a poor prognosis. Noncharacteristic solitary renal masses need to be differentiated from renal cell carcinoma. We present a 73-year-old man with a solitary renal mass treated with partial nephrectomy and histologic diagnosed with a primary lymphoma of the kidney. In the preventive diagnosis, conventional radiology is unsuitable, contrast-enhanced renal ultrasound contributes to the diagnosis, and primary renal biopsy is useful. We reviewed the medical literature and discuss primary renal lymphoma, a rare disease with poor prognosis, whose treatment after postsurgical diagnosis based on chemotherapy with R-CHOP (rituximab plus cyclophosphamide/doxorubicin/vincristine/prednisone).