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Updated: May 21, 2026

Interphase Fluorescence in situ Hybridization of Bone Marrow Smears of Multiple Myeloma
Published on: April 15, 2022
Coexistence of fibrillary glomerulonephritis in a patient with multiple myeloma
Jin Hee Park1, Bo Ra Kim, Bong Geon Chun
1Department of Internal Medicine, Kosin University College of Medicine, Korea.
Abstract:
A 71-year-old man was admitted to our hospital for two weeks due to edema in both legs. A bone marrow aspiration test confirmed a diagnosis of multiple myeloma. The result of the patient's renal biopsy showed fibrillary glomerulonephritis (FGN). FGN is a rare form of glomerulopathy that is diagnosed using electron microscopy when deposits of amyloid-like fibrils are observed on the mesangium and microvascular wall. These fibrils do not respond to Congo red staining and are generally 12-30 nm in diameter. This is a report of an unusual case of fibrillary glomerulonephritis in a patient with multiple myeloma.
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