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[Transplant glomerulopathy. Anatomohistopathologic and ultrastructural aspects]
G Sacchi1, M Fiorentino, A Rodolfi
1II Servizio di anatomia ed istologia patologica degli Spedali Civili di Brescia.
Abstract:
14 cases of transplant glomerulopathy have been observed in 254 specimen taken from 152 renal allografted patients. Lesions have been studied at light, immunofluorescence and ultrastructural level. Following morphological parameters have been evaluated by semiquantitative method: focal mesangial sclerosis, mesangial matrix, mesangial cellularity, glomerular basement membrane thickening, double contours and crescents. Intermediate and advanced stages prevailed with the evidence of capillary aneurysms in 2 out 14 cases. Electron microscopy showed thickening of the glomerular basement membrane with finely lamellar and electron lucent thickening of the lamina rara interna. Transplant glomerulopathy lesions need differential diagnosis with thrombotic microangiopathy and can be considered equivalent of chronic vascular rejection.
Insights
Transplant glomerulopathy, a kidney transplant complication, affects 14 of 152 patients. These advanced lesions resemble chronic vascular rejection and require differentiation from thrombotic microangiopathy.
Area of Science:
- Nephrology
- Transplant Pathology
- Electron Microscopy
Context:
- Renal allograft recipients are susceptible to transplant glomerulopathy.
- Study analyzed 14 cases from 152 patients undergoing renal transplantation.
Purpose:
- To characterize the morphological features of transplant glomerulopathy.
- To differentiate transplant glomerulopathy from other glomerular diseases.
Summary:
- Evaluated lesions using light, immunofluorescence, and ultrastructural microscopy.
- Assessed parameters like mesangial sclerosis, GBM thickening, and crescents.
- Observed capillary aneurysms and characteristic lamina rara interna thickening.
Impact:
- Transplant glomerulopathy presents in intermediate to advanced stages.
- Findings suggest a potential equivalence to chronic vascular rejection.
- Highlights the need for differential diagnosis with thrombotic microangiopathy.