The authors declare that they have no conflict of interests.
All authors participated in this case.
All authors read and approved the final manuscript.
Qualifications: MD. and Ph.D.
Title: Assistant Professor.
Affiliations: Department of Urology, School of Medicine, Teikyo University, Tokyo, Japan.
Autoimmune hemolytic anemia (AIHA) is hemolytic anemia characterized by autoantibodies directed against red blood cells. AIHA can be induced by hematological neoplasms such as malignant lymphoma, but is rarely observed in the urological field. We report a case of renal urothelial cancer inducing Coombs-positive warm AIHA and severe thrombocytopenia that was responsive to nephroureterectomy.
A 52-year-old man presented with a 1-month history of general weakness and dizziness. Hemoglobin level was 4.2 g/dL, and direct and indirect Coombs tests both yielded positive results. Abdominal computed tomography revealed huge left hydronephrosis due to a renal pelvic tumor measuring 4.0 x 4.0 x 3.0 cm, and renal regional lymph-node involvement was also observed and suspected as metastasis. Corticosteroid therapy was administered, and nephroureterectomy was performed. After surgical resection, the hemoglobin level gradually normalized, and direct and indirect Coombs tests yielded negative results. We thus diagnosed warm AIHA associated with renal urothelial cancer.
To the best of our knowledge, this represents the first report of AIHA associated with renal urothelial cancer and severe thrombocytopenia responsive to nephroureterectomy. Renal urothelial cancer needs to be included in the differential diagnoses for warm AIHA, and nephroureterectomy represents a treatment option for AIHA.
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Kamra D, Boselli J, Sloane BB, Gladstone DE. Renal cell carcinoma induced Coombs negative autoimmune hemolytic anemia and severe thrombocytopenia responsive to nephrectomy. J Urol. 2002;167:1395–5.
- Autoimmune hemolytic anemia associated with renal urothelial cancer: A case report and literature review
- BioMed Central
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