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Volume 53, Issue 6 , Pages A37-A39 , June 2009

Quiz Page June 2009: Worsening Kidney Function With a History of Urolithiasis

High-power view of periodic acid–Schiff stain (original magnification ×200).

High-power view of periodic acid–Schiff stain (original magnification ×200).
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High-power view of von Kossa stain with polarized light (original magnification ×400).

High-power view of von Kossa stain with polarized light (original magnification ×400).
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Electron micrograph.

Electron micrograph.
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Case provided and authored by Tomonori Kimura, MD,^1,2 Keiko Yasuda, MD,¹ Yoshitsugu Obi, MD,¹ Ken-ichiro Kobayashi, MD,¹ Tomiko Kuhara, PhD,³ Yoshitaka Isaka, MD, PhD,² Enyu Imai, MD, PhD,² Hiromi Rakugi, MD, PhD,² and Terumasa Hayashi, MD, PhD,¹ ¹Department of Nephrology, Rinku General Medical Center, Izumisano Municipal Hospital; ²Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Osaka; and ³Division of Human Genetics, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan.Address correspondence to Terumasa Hayashi, MD, PhD, Department of Nephrology, Izumisano Municipal Hospital, Rinku General Medical Center, 2-23 Rinku-Orai Kita, Izumisano, Osaka 598-8577, Japan. E-mail: t-hayashi@rgmc.izumisano.osaka.jp