Sheikh Muhammad Sarwar Hussain, Vinay Kumar Bhagat.
Focal Xanthogranulomatous Pyelonephritis – a diagnostic dilemma.
J Coll Physicians Surg Pak Jan ;16(2):164-6.

Focal Xanthogranulomatous Pyelonephritis (XGPN) may be erroneously interpreted as renal cell carcinoma. We report a case of a young Philippino who presented with persisting right flank pain for 2 years. Imaging showed a well delineated lesion in the lower pole of the right kidney extending to the hilum. Nephrectomy was performed under a tentative diagnosis of renal cell carcinoma, whereas histology revealed focal XGPN. Pre-operative diagnosis of focal XGPN was difficult because of radiological similarities to renal cell carcinoma and lack of the usual clinical presentation.

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