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Medullary sponge kidney with IgA nephropathy: a case report and literature review
Chuchu Zeng1, Yunjie Jin2, Yanzhe Wang1
1Department of Nephrology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, 1111 Xianxia Road, Shanghai, 200336, China.
Background:
Medullary sponge kidney (MSK)is rare in association with glomerulonephritis. We report a patient with medullary sponge kidney, and the kidney biopsy revealed a diagnosis of IgA nephropathy.
Case Presentation:
A 27-year-old female presented with hematuria and proteinuria, and imaging studies indicated the presence of medullary spongy kidney. With appropriate preparation, a kidney biopsy was performed. Considering the patient's clinical and pathological characteristics, the final diagnosis was determined to be medullary sponge kidney associated by IgA nephropathy. The combination of corticosteroids and angiotensin receptor blockers (ARBs) proved to be significantly effective in reducing proteinuria in the current case. To the best of our knowledge, this is the first reported case that demonstrates the coexistence of MSK and IgA nephropathy.
Conclusions:
Administering precise therapy based on renal pathology can potentially enhance outcomes for patients with renal conditions, necessitating the need for clinicians to be vigilant about differential diagnosis in order to reduce the rates of missed diagnoses and misdiagnosis.
Insights
This case study reports the first known instance of medullary sponge kidney (MSK) coexisting with IgA nephropathy. Treatment with corticosteroids and ARBs effectively reduced proteinuria in this rare renal condition.
Area of Science:
- Nephrology
- Pathology
Background:
- Medullary sponge kidney (MSK) is a rare congenital kidney malformation.
- Association of MSK with glomerulonephritis is uncommon.
- IgA nephropathy is a common cause of glomerulonephritis.
Observation:
- A 27-year-old female presented with hematuria and proteinuria.
- Imaging confirmed medullary sponge kidney.
- Kidney biopsy revealed IgA nephropathy.
Findings:
- The patient was diagnosed with medullary sponge kidney and IgA nephropathy.
- This is the first reported case of this dual diagnosis.
- Combination therapy of corticosteroids and angiotensin receptor blockers (ARBs) significantly reduced proteinuria.
Implications:
- Highlights the importance of considering coexisting renal pathologies.
- Precise diagnosis based on renal biopsy is crucial for effective treatment.
- Vigilance in differential diagnosis can improve patient outcomes in rare renal conditions.
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