[Pathological features and clinical manifestations in 313 children with nephropathy under 6].
OBJECTIVE
To explore the relationship between pathological features and clinical manifestations in children with nephropathy under 6 years old.


METHODS
Renal biopsy by rapid percutaneous puncturation was performed on 313 children under 6 who were all diagnosed clinically as kidney diseases of 14 different kinds. The specimens were divided into 3 parts for microscope, electron microscope and immuno fluorescence examination respectively and processed by HE, PAS, PASM, and Masson staining. Immunofluorescence was used to detect the deposition of IgG, IgM, IgA, C3, C4, C1q, and Fb in the renal tissues. Additional examinations were done to detect HBs-Ag, HBeAg and HBcAg deposition in some cases with positive serum HBs-Ag. Altogether 290 of the specimens (290/313, 92.65%) were examined by electron microscope.


RESULTS
All the renal biopsy performances were successful. The clinical manifestations comprised of persistent haematuria (32.92%, 103/313), idiopathic nephritic syndrome (26.1%, 82/313), acute nephritic syndrome (20.14%, 63/313), Henoch Schonlein purpura nephritis (8.32%, 26/313), HBV-nephritis (4.79%, 15/313), and isolated proteinuria (2.56%, 8/313). The main pathological patterns of glomerular disease were identified as mesangial proliferation (51.75%, 162/313), IgM nephropathy (8.31%,26/313), minor and minimal change (7.99%, 25/313), IgA nephropathy (7.35%, 23/313), endocapillary proliferative glomerulonephritis (5.11%, 16/313), focus segmental glomerulosclerosis (4.47%, 14/313), thin basement membrane nephropathy (4.47%, 14/313), and membrane nephropathy (4.47%, 14/313). Alport syndrome, congenital nephrotic syndrome, and thin basement membrane nephropathy can be diagnosed by electron microscope, white IgA nephropathy, IgM nephropathy and C1q nephropathy by immunopathology.


CONCLUSIONS
Similar clinical manifestations may differ in the pathology and the clinical features of one pathological diagnosis may vary greatly. Renal biopsy is of great help to the diagnosis, treatment and the prognosis evaluation for children with nephropathy under 6. Electron microscopes also play an important role in the diagnosis of nephropathy.
Dang
Xi-qiang
XQ
Department of Pediatrics, Second Xiangya Hospital, Central South University, Changsha 410011, China. happydang@tom.com
Cao
Yan
Y
Yi
Zhu-wen
ZW
Xu
Zi-chuan
ZC
He
Xiao-jie
XJ
Huang
Dan-lin
DL
D001707:Biopsy, Needle; D002648:Child; D002675:Child, Preschool; D005921:Glomerulonephritis / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D007223:Infant; D007668:Kidney / Q000473:pathology / Q000648:ultrastructure*; D007674:Kidney Diseases / Q000175:diagnosis / Q000473:pathology*; D009404:Nephrotic Syndrome / Q000175:diagnosis / Q000473:pathology