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KMID : 0191120180330180136
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Journal of Korean Medical Science
2018 Volume.33 No. 18 p.136 ~ p.136
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Primary Glomerulonephritis with Unique C4d Deposition and Concurrent Non-infectious Intermediate Uveitis: a Case Report and Literature Review
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Park Jong-Man
Lee Ha-Rin
Song Sang-Heon
Seong Eun-Young
Kwak Ihm-Soo
Park Sung-Who
Kim Young-Keum
Shin Na-Ri
Sol Mee-Young
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Abstract
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C4 glomerulopathy is a recently introduced entity that presents with bright C4d staining and minimal or absent immunoglobulin and C3 staining. We report a case of a 62-year-old man with C4 glomerulonephritis (GN) and uveitis. He presented to the nephrology department with proteinuria and hematuria. The patient also had intermediate uveitis along with proteinuria and hematuria. A kidney biopsy that was performed in light of continuing proteinuria and hematuria showed a focal proliferative, focal sclerotic glomerulopathy pattern on light microscopy, absent staining for immunoglobulin or C3 by immunofluorescence microscopy, with bright staining for C4d on immunohistochemistry, and electron-dense deposits on electron microscopy. Consequently, C4 GN was suggested as the pathologic diagnosis. Although laser microdissection and mass spectrometry for glomerular deposit and pathologic evaluation of the retinal tissue were not performed, this is the first report of C4 GN in Korea and the first case of coexisting C4 GN and uveitis in the English literature.
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KEYWORD
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Glomerulonephritis, Uveitis, Compliment C4d
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