Renal Flashcards
- undifferentiated tubular structures
- surrounded by undifferentiated mesenchyme, smooth muscle and islands of cartilage
- abn. in metanephric differentiation
- most common cause of abd mass in newborns
- Unilateral
Unilateral Multicystic Renal Dysplasia
- numerous cysts in renal parenchyma
- mutation in gene encoding polycystin
- sense of heaviness in loins, bilateral flank and abd masses, blood clots in urine
- usually in 4th decade of life
- risk for hepatic cysts and berry aneurysm
Autosomal Dominant Polycystic Kidney Disease
Most common location of ectopic kidney
pelvis
All of the following are causes of….?
- Minimal Change Disease
- Focal Segmental Glomerulosclerosis
- Membranous Glomerulopathy
- Membranoproliferative type 1
- Rapidly Progressive Glomerulonephritis
- Amyloidosis
Nephrotic Syndrome
All of the following are causes of…?
- IgA Nephropathy
- Henloch Schoenleun Purpura
- Alport Syndrome
- SLE
- Membranoproliferative Glomerulonephritis type 2
- Cryoglobulinemia
- Postinfectious Glomerulonephritis
Nephritic Syndrome (RBC casts=tubular bleeding, not from lower in urinary tract!!)
- Proteinuria
- Congo Red Staining
- Some type of Chronic inflammatory disorder (chronic suppurative bronchiectasis, Multiple Myeloma, Rheumatoid Arthritis, and Osteomyelitis)
Amyloid Nephropathy
- fusion of podocyte foot processes
- nephrotic syndrome (90% of causes in children)
- selective loss of albumin in urine
- Resolves with corticosteroids
Minimal Change Disease
Reason for lipid droplets in urine of nephrotic patients?
Liver compensates for protein loss by increasing lipoprotein production–> hyperlipidemia
- granular deposits of IgG and complement in subendothelium and mesangium on immunofluorescence
- Capillary endothelial BM proliferation
- Tram track appearance from doublung of basement membrane
Membranoproliferative Glomerulonephritis type 1
- Linear deposition of anti-glomerular basement membrane antibody
- hemoptysis
- Crescentic glomerulopathy
Goodpastures Syndrome
- Deposition of IgA in mesangium
- episodic hematuria following URI or GI infections
- 20% of patients develop renal failure after 10 years (sclerosis)
Berger Disease
- diffuse hypercellularity of glomeruli (mesangium, endothelial and epithelial cells)
- diffuse deposition of immune complexes (mesangial, subendothelial subepithelial and inside capillary loops-wire loop lesion)
- rash
- severe form of this called Diffuse Proliferative Glomerulonephritis
Lupus nephritis
- History of pharyngitis
- nephritic syndrome
- complement fixation on renal biopsy (attracts and activates neutrophils and monocytes–>stim proliferation of mesangial and endothelial cells)
- subepithelial dense deposits (humps) with subendothelial and mesangial deposition (less visible)
**usually recover without consequences**
PostInfectious Glomerulonephritis
- granulomatous lesions of nose, sinuses, and lungs
- elevated C-ANCA
- focal glomerular necrosis with crescents and vasculitis
Wegener Granulomatosis- presents as rapidly progressive glomerulonephritis (RPGN)
- glomerular sclerosis affection some portions of some glomeruli
- most common renal complication of IV drug abuse
- proteinuria
- when associated with HIV is severe and rapidly progressing
Focal Segmental Glomerulosclerosis
released by renal interstitial peritubular cells in response to hypoxia/shock
erythropoietin
- pathologic changes in some glomeruli and not others
- mesangial proliferation
- Causes: lupus nephritis, nephritis with vasculitides, Henloch Shonlein purpura, Berger Disease
focal proliferative glomerulonephritis