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PATHOLOGY OF KIDNEYS VII. practical training 3 rd year General Medicine
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Normal glomerulus 1 Capillary lumen 2 Basement membrane 3 Podocytyes 4 Mesangial cells 5 Proximal tubulus 6 Bowman’s capsule 7 Mesangial matrix 8 Distal tubulus 9 Macula densa 1 1 2 3 4 5 6 7 8 9
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Capillary loops – electronogram 1 Podocytes Podocytal processus Basement membrane Endothelium Mesangial cell Mesangial matrix Capillary lumen
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Cystic kidney diseases
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Infantile cystosis (Microcystosis) of kidneys
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Microcystosis
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Vascular nephrosclerosis
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Classification of glomerular diseases Primary Glomerular Diseases Glomerulonefritis in Systemic Diseases Glomerular Lesions in Vascular Diseases Glomerular Lesions in Metabolic Diseases Hereditary Nephropathies Miscellaneous Glomerular Diseases End Stage Kidney Glomerular Lesions Following Transplantation
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Aetiological clasification of glomerular injury Non-immunological hyperfiltration BM polyanion loss BM inherited deffects ischemic Immunological circuluting immune complex in situ immune complex anti-basement membrane antibody (anti-GBM) ANCA antibody T-cell mediated cytotoxicity
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Nomenclature of glomerular injury Diffuse - all glomeruli Focal - some glomeruli, others unaffected Global - the whole glomerulus Segmental - only part of the glomerulus
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Light microscopic hanges Proliferative: increased cell numbers (proliferation, PNM and macrophages recruitment from the circulation) Membranous: BM thickening Membrano-proliferative: a combination of the two above features Crescentic: proliferation of cells lining Bowman’s capsule
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Diabetic glomerulosclerosis (Kimmelstiel-Wilson) 1 hyaline deposits in mesangial matrix of glomerulus 1
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Diabetic glomerulosclerosis (Kimmelstiel-Wilson) 1 hyaline globules in mesangial matrix of glomerulus 2 capillaries around hyaline globules 3 hyalinosis of mesangium 1 2 3
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Armani’s cells (PAS)
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Endocapillary proliferative glomerulonefritis 1 Reduction of capillary lumen 2 Bulge and proliferation of cellular formation of glomerulus 1 2 2 2
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Endocapillary proliferative glomerulonefritis immunoflourescenc-subendothelial immune-complex deposit 1 1 Granular subendothelial deposits on basal membrane
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E Swelling endothelial cells 1 Basal membrane Stars- subendothelial deposits of immunoglobulins on basal membrane 1 Endocapillary proliferative glomerulonefritis, electronogram
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Diffuse sclerozing glomerulonefritis
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Rapidly progressive (crescentic) glomerulonephritis 1 Extracapillary proliferation of epithelial cells of Bowman capsule and fibrin – compression of glomerular capillaries 2 Regresive alteration of glomerular capillaries 1 2 2
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Rapidly progressive (crescentic) glomerulonephritis 1 Basal membrane of Bowman capsule 2 Fibrin 3 Hyaline deposits in glomerular capillaries 1 2 3 3 3
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Acute suppurative pyelonephritis
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Chronic pyelonephritis
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Chronic pyelonefritis (end stage kidney, anamnesis of prostatic hypertrophy) Dilatated ureter Capsule of kidney End stage kidney Kidney without big changes Chronic urocystitis
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Amyloid nephropathy
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Biliary nephrosis
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Hydronephrosis
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Wilms’ tumour (nephroblastoma)
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1 1 Stromal component 2 Blastema component 3 Epithelial component 1 2 2 3
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Nephroblastoma
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Renal cell carcinoma, conventional type tumour Lower pole of kidney Kidney in section Tumour invasion inside vein in hilus
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Renal cell carcinoma, clear cell type
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