Papillary renal cell carcinoma with sarcomatoid differentiation in a native kidney of transplant recipient: A case report and review of literature Ranjan SK, Mittal A, Kumar S, Kishore S, Narain TA, Mammen KJ,

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Official publication of the Indian Society of Nephrology

CASE REPORT

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Papillary renal cell carcinoma with sarcomatoid differentiation in a native kidney of transplant recipient: A case report and review of literature Satish K Ranjan¹, Ankur Mittal¹, Sunil Kumar¹, Sanjeev Kishore², Tushar A Narain¹, Kim J Mammen¹ ¹ Department of Urology, AIIMS, Rishikesh, Uttarakhand, India ² Department of Pathology, AIIMS, Rishikesh, Uttarakhand, India Correspondence Address: Ankur Mittal, Department of Urology, AIIMS, Rishikesh, Uttarakhand India Source of Support: None, Conflict of Interest: None DOI: 10.4103/ijn.IJN_239_20

Renal cell carcinoma (RCC) developing in a transplant recipient is about 5–20 times higher than the general population. It is more common in native kidneys than graft kidney, and incidence varies between 0.3% and 4.8%. Clear cell and papillary types are more frequently reported. Most RCC of allograft recipient is usually low-grade with favorable prognosis. We present a case of papillary RCC with sarcomatoid differentiation (SD) in a native kidney of renal transplant (RT) recipient. The coexistence of sarcomatoid variant with papillary RCC, as in our case, makes it a high grade (WHO/ISUP grade 4) and portends a poor prognosis. Relative aggressiveness and rarity of this variant histology in transplant recipients prompted us to report this case and carry out an extensive search of the available literature.

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