What is tram track in kidney?

What is tram track in kidney?

Renal Pathology. This silver stain demonstrates a double contour to many basement membranes, or the “tram-tracking” that is characteristic of membranoproliferative glomerulonephritis (MPGN) that results from basement membrane reduplication.

In which kind of glomerulonephritis GBM shows a double contour or tram track?

Membranoproliferative glomerulonephritis (MPGN) type I. Glomerulus with mesangial interposition producing a double contouring of basement membranes, which, in areas, appear to surround subendothelial deposits (Jones silver methenamine–stained section; original magnification × 400).

What causes FSGS?

Focal segmental glomerulosclerosis, or FSGS, can be caused by a variety of conditions, like diabetes, sickle cell disease, other kidney diseases, and obesity. It can also be caused by an infection and drug toxicity. A rare form of FSGS is caused by inherited abnormal genes.

What is glomerular basement membrane?

The glomerular basement membrane (GBM) is the central, non-cellular layer of the glomerular filtration barrier that is situated between the two cellular components—fenestrated endothelial cells and interdigitated podocyte foot processes.

What is diffuse proliferative glomerulonephritis?

Diffuse proliferative glomerulonephritis (DPGN) is a term used to describe a distinct histologic form of glomerulonephritis common to various types of systemic inflammatory diseases, including autoimmune disorders (eg, systemic lupus erythematosus [SLE]), vasculitis syndromes (eg, granulomatosis with polyangiitis), and …

Can MPGN be cured?

Most studies are confined to MPGN type I and have a relatively short-term follow-up period; furthermore, hepatitis C virus (HCV) is now known to be an important cause of many cases that were previously thought to be idiopathic MPGN, [21, 22, 25, 26, 27, 28] making older treatment results difficult to interpret.

Is MPGN hereditary?

Genetic factors have been implicated in the pathogenesis of certain cases of MPGN. Familial cases of all three histological subtypes have been described. Genetic defects in the control of complement pathways appear to be at the root of many hereditary forms of MPGN.

How long can you live MPGN?

Up to 50-60% of untreated patients will progress to end-stage kidney disease within 10-15 years, while 25-40% of untreated patients will continue to have normal renal function. Spontaneous remission or improvement occurs in less than 10% of cases.

What does the tram-tack sign mean on a chest xray?

Tram-track sign annotated in a 65 year old male with diagnosed bronchiectasis secondary to dilated bronchi within both lower lobes. The tram-tack sign seen on this chest x-ray denoted thickened, non-tapered walls of the cylindrical bronchiectasis.

What is the normal thickness of glomerular membrane?

In adults GBM measures 310 to 380 nanometers and its thickness is altered in various glomerular diseases. Visceral epithelial cells have foot processes are involved in basement membrane synthesis and plays a role in glomerular permeability. 14.

How is glomerulonephritis (GBP) diagnosed?

In most cases light microscopy (LM) and direct immunofluorescence (DIF) study are more than enough for definitive diagnosis of glomerulonephritis. 10.

What is the classification of glomerular disease by distribution?

CLASSIFICATION OF GLOMERULAR DISEASE BY DISTRIBUTION A)Classification of disease distribution when many glomeruli are considered.FOCAL:- Disease affecting only some of glomeruli.DIFFUSE:- Disease affecting most or all glomeruli.