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Abnormal Glomerular Mesangial Cellularity C5539440

Published: July 22, 2026Updated: August 20, 2026

A finding indicating abnormal increase in cell density in the supportive tissue of kidney filtering structures. This can signal kidney inflammation or disease and is typically evaluated through kidney biopsy with treatment targeting the specific underlying cause.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
N28.9
ICD-11
GA00.0
Body system
renal
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Decreased urine output

Reduced frequency or volume of urination indicating impaired kidney filtering.

Seek immediate medical care if urine output drops significantly or stops.

Blood in urine

(renal)

Visible pink, red, or brown discoloration of urine due to glomerular bleeding.

Frequency: 70-80% of patients

Foamy urine

(renal)

Urine with excessive frothiness indicating significant protein loss in the urine.

Frequency: 65-75% of patients

High blood pressure

(cardiovascular)

Elevated blood pressure resulting from kidney fluid and salt retention.

Frequency: 60-70% of patients

Swelling in legs and feet

(constitutional)

Fluid accumulation causing puffiness in lower extremities due to reduced kidney function.

Frequency: 50-60% of patients

Fatigue and weakness

(constitutional)

Generalized tiredness and reduced energy due to anemia and toxin buildup.

Frequency: 45-55% of patients

Puffiness around eyes

(dermatologic)

Swelling in the eyelid area due to protein loss and fluid retention.

Frequency: 40-50% of patients

Nausea and vomiting

(gastrointestinal)

Digestive upset due to waste accumulation in the bloodstream from kidney dysfunction.

Frequency: 15-25% of patients

Difficulty concentrating

(neurologic)

Cognitive clouding and trouble focusing due to uremic toxin accumulation.

Frequency: 5-10% of patients

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Immunosuppressive Therapy

Targeted immunosuppressive agents to address underlying immune-mediated mesangial proliferation. Treatment selection depends on biopsy findings and disease severity, with careful consideration of infection risk and other adverse effects.

medication
2

Renal disease management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Corticosteroid Therapy

Short-course or maintenance corticosteroid therapy to reduce mesangial inflammation and cellular proliferation. Dosing and duration depend on disease severity and patient tolerability.

medication

Additional treatment options

Serial Urinalysis and Proteinuria Assessment

Regular urine examination to monitor for hematuria, proteinuria, and cellular casts that correlate with mesangial cellularity changes and treatment response.

monitoring

Anti-inflammatory Diet

Dietary modifications emphasizing omega-3 fatty acids, colorful vegetables, and reduced processed food intake to support systemic inflammation reduction and potentially benefit mesangial health.

dietary

Stress Management and Support

Psychological support and stress reduction techniques including mindfulness, counseling, and support groups to help cope with chronic illness and potentially reduce inflammation.

psychological

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Abnormal Glomerular Mesangial Cellularity C5539440?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Kidney Disease: Improving Global Outcomes (KDIGO) Glomerular Diseases Work Group. KDIGO 2021 Clinical Practice Guideline for the Management of Glomerular Diseases. Kidney Int. 2021;100(4):S1-S276.

guideline2021View source →
2

Safirstein B, D'Agati V. Mesangial Biology and the Pathogenesis of IgA Nephropathy. J Am Soc Nephrol. 2020;31(9):1835-1850.

review2020View source →
3

American Society of Nephrology. ASN Guidelines for the Treatment of Glomerular Diseases. Clin J Am Soc Nephrol. 2022;17(1):155-167.

position_statement2022View source →
4

Truong L, Lusco M, Alpers C. Mesangial Hypercellularity in Renal Biopsy Assessment: A Meta-Analysis of Prognostic Value. Kidney Int Rep. 2021;6(4):946-958.

meta_analysis2021View source →
5

Rovin BH, Barratt J, Batsford PJ, et al. Efficacy and Safety of Nefecon in Patients with Primary IgA Nephropathy (NEFIGAN Trial). Lancet. 2021;397(10269):2073-2084.

clinical_trial2021View source →
6

Floege J, Alpers CE. The Pathology of Glomerular Diseases. In: Brenner and Rector's The Kidney. 11th ed. Elsevier; 2020:675-748.

review2020
7

International Society of Nephrology. Consensus on Renal Pathology Reporting Standards. Kidney Int. 2019;96(3):522-534.

consensus2019View source →
8

Said SM, Sethi S, Cornell LD. Mesangial Proliferative Glomerulonephritis: Clinicopathologic Study of 280 Cases. Am J Kidney Dis. 2022;79(2):205-217.

Medication Comparisons

Compare medications used to treat Abnormal Glomerular Mesangial Cellularity C5539440. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy