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[Membranous glomerulonephritis with crescent overlapping].

Gioacchino Li Cavoli, Rita Passantino, Angelo Ferrantelli

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    Acute crescentic transformation in membranous glomerulonephritis is rare but serious. Early recognition and immunosuppressive therapy may improve kidney function in these patients.

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    Area of Science:

    • Nephrology
    • Immunology

    Background:

    • Membranous glomerulonephritis (MGN) can rarely present with acute crescentic transformation.
    • This complication signifies a more aggressive disease course compared to typical MGN.

    Observation:

    • A 66-year-old male with a decade of hypertension and polyneuropathy experienced a rapid decline in renal function.
    • Physical examination revealed edema and severe hypertension; laboratory tests showed elevated creatinine and proteinuria.
    • Kidney biopsy confirmed membranous glomerulonephritis with superimposed crescentic changes, with negative autoimmune markers.

    Findings:

    • Despite initial treatment with steroids and cyclophosphamide, the patient showed no improvement and progressed to chronic hemodialysis.
    • The case highlights the aggressive nature of crescentic glomerulonephritis superimposed on MGN.

    Implications:

    • Recognizing crescentic transformation in MGN is crucial for timely intervention.
    • Prompt immunosuppressive therapy may offer potential for renal function recovery in select patients.