Membranous glomerulonephritis (mmGN)

- The term mmGN reflects the primary histologic change noted on light microscopy: glomerular basement membrane thickening with little or no cellular proliferation or infiltration.

- In children, secondary forms are more common than primary ones. Hepatitis B, drugs, malignancies, SLE and others are common causes of mmGN

- Several histologic characteristics by immunofluorescence and electron microscopy have been identified that may help to distinguish between idiopathic and secondary forms of mmGN.