Primary Renal Lymphoma (Low-grade B cell Follicular Lymphoma) Presenting as Pyrexia of Unknown Origin

[摘要] Background: Primary renal lymphoma (PRL) is a disease of genitourinary tract which is a rare entity; even its existence has been debated because of absence of lymphatic tissue within renal parenchyma per se. Case Report: We present the case of 67-yr old male who was evaluated for pyrexia of unknown origin and refractory oral ulcer. His NCCT whole abdomen revealed retroperitoneal mass arising from mid and lower pole of right kidney. Histopathology and immunohistochemistry of ultrasound guided renal biopsy revealed low grade B cell follicular non-Hodgkin lymphoma, a rare entity of primary renal non-Hodgkin lymphoma. Conclusion: Primary renal lymphoma (PRL) should be kept as differential diagnosis while investigating renal mass.

[学科分类] 生理学

[关键词] Biopsy;Fever;Kidney;Non-Hodgkin Lymphoma;Oral Ulcer.