Amyloid light-chain amyloidosis presented as focal segmental glomerulosclerosis in a kidney transplant recipient

Sung Hyun Park; So Hyun Kwon; Hwa Young Lee; Sua Lee; Eun Jeong Ko; Tae Hyun Ban; Byung Ha Chung; Yeong Jin Choi; Chul Woo Yang

doi:10.4285/kjt.2020.34.1.66

Amyloid light-chain amyloidosis presented as focal segmental glomerulosclerosis in a kidney transplant recipient

Korean J Transplant. 2020 Mar 31;34(1):66-70. doi: 10.4285/kjt.2020.34.1.66.

Authors

Sung Hyun Park^{1

2}, So Hyun Kwon^{1

2}, Hwa Young Lee^{1

2}, Sua Lee^{1

2}, Eun Jeong Ko^{1

2}, Tae Hyun Ban^{1

2}, Byung Ha Chung^{1

2}, Yeong Jin Choi³, Chul Woo Yang^{1

2

4}

Affiliations

¹ Transplant Research Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
² Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
³ Department of Hospital Pathology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
⁴ Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, The Collage of Medicine, The Catholic University of Korea, Seoul, Korea.

Abstract

Amyloid light-chain (AL) amyloidosis after kidney transplantation is a rare disease in the world, and only one case of systemic AL amyloidosis after kidney transplantation is reported in Korea. We here report a 46-year-old woman with AL amyloidosis developed after kidney transplantation. The underlying disease of our case was focal segmental glomerulosclerosis (FSGS), and was admitted to hospital for evaluation of proteinuria developed 2 years after kidney transplantation. The patient was initially diagnosed as recurrent FSGS on light microscopy. But, electron microscopic finding was suggestive of amyloidosis and systemic evaluation was consistent with systemic AL amyloidosis. This case provides the importance of differential diagnosis of proteinuria in kidney transplant recipients.

Keywords: Amyloid light-chain amyloidosis; Focal segmental glomerulosclerosis; Kidney transplantation.

Publication types

Case Reports