Bilateral Multicystic Dysplastic Kidney: Signs & Risks

Written by Medicover Team and Medically Reviewed by Dr Siddharth Herur , Nephrologists

Causes
Find a Doctor
Diagnosis
Treatment
FAQs
Book an Appointment

1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Bilateral multicystic dysplastic kidney is a rare congenital condition where both kidneys develop multiple cysts of varying sizes instead of normal kidney tissue. This condition occurs during fetal development when the kidneys do not form properly.

The exact cause of bilateral multicystic dysplastic kidney is not fully understood, but it is believed to result from abnormal fetal kidney development early in pregnancy. In most cases, it is not inherited and occurs sporadically.

While this condition may affect kidney function, the severity can vary among individuals. Understanding the underlying causes of bilateral multicystic dysplastic kidney is crucial for proper management and care.

What Are the Types of Bilateral Multicystic Dysplastic Kidney?

Bilateral Multicystic Dysplastic Kidney (MCDK) is a rare congenital condition in which both kidneys are replaced by multiple non-functioning cysts due to abnormal fetal kidney development. Unlike unilateral MCDK, where only one kidney is affected, bilateral involvement is severe and is generally classified based on the extent of kidney involvement and associated urinary tract abnormalities.

Classic Bilateral Multicystic Dysplastic Kidney: Both kidneys are extensively replaced by multiple cysts of varying sizes with little or no functional kidney tissue. This form is usually incompatible with long-term survival due to the absence of adequate kidney function.
Bilateral MCDK with Residual Renal Tissue: A rare form in which small areas of functioning kidney tissue remain. The degree of kidney function varies, but severe chronic kidney disease is common.
Bilateral MCDK Associated with Urinary Tract Abnormalities: Occurs alongside congenital abnormalities such as ureteral atresia, posterior urethral valves, or other urinary tract malformations that further impair kidney development and function.

What Are the Symptoms of Bilateral Multicystic Dysplastic Kidney?

Bilateral multicystic dysplastic kidney is a condition where both kidneys have multiple cysts and do not function properly. Symptoms may include

Abdominal pain may occur, especially in the lower back or sides, as a common symptom of bilateral multicystic dysplastic kidney.
High blood pressure can develop due to kidney dysfunction in individuals with bilateral multicystic dysplastic kidney.
Blood in the urine, also known as hematuria, may be present as a symptom of bilateral multicystic dysplastic kidney.
Frequent urinary tract infections can occur due to abnormalities in the affected kidneys in bilateral multicystic dysplastic kidney.
Swelling in the face, hands, legs, or feet may be seen in some cases of bilateral multicystic dysplastic kidney due to fluid retention.

What Are the Causes of Bilateral Multicystic Dysplastic Kidney?

Bilateral Multicystic Dysplastic Kidney (MCDK) is a congenital condition that develops before birth when both kidneys fail to form normally. Abnormal interactions between the developing kidneys and urinary tract result in the replacement of normal kidney tissue with multiple fluid-filled cysts.

Abnormal fetal kidney development: Disruption of normal kidney formation during early pregnancy leads to dysplastic, non-functioning kidneys.
Genetic factors: Certain inherited genetic mutations or chromosomal abnormalities may increase the risk of bilateral MCDK.
Abnormal ureteric bud development: Improper interaction between the ureteric bud and metanephric tissue prevents normal kidney formation.
Urinary tract obstruction: Severe blockage of the developing urinary tract during fetal life may interfere with kidney development and contribute to cyst formation.
Associated congenital syndromes: Bilateral MCDK may occur as part of rare genetic syndromes affecting multiple organs.
Unknown causes: In many cases, the exact reason for abnormal kidney development remains unknown.

When to See a Doctor for Bilateral Multicystic Dysplastic Kidney?

If prenatal imaging detects kidney abnormalities in your baby, consult a pediatric nephrologist or urologist immediately. Bilateral multicystic dysplastic kidney is a serious condition requiring specialised neonatal care and potential dialysis or transplantation.

You should see a doctor if you have:

Prenatal ultrasound showing bilateral kidney cysts or absence of normal kidney structure
Newborn with decreased urine output, swelling, or breathing difficulties after birth
Concerns about kidney function based on abnormal prenatal or neonatal screening results

Get medical help immediately if:

Your newborn produces no urine or very minimal urine in the first 24 hours
Baby develops severe breathing problems, lethargy, or signs of fluid overload

These could be signs of a serious complication like renal failure at birth, which needs urgent care.

Find Nephrologists for Bilateral Multicystic Dysplastic Kidney Treatment Near You

How is Bilateral Multicystic Dysplastic Kidney Diagnosed?

When diagnosing a bilateral multicystic dysplastic kidney, doctors typically start with a thorough physical examination and medical history review. This is followed by imaging tests such as an ultrasound, which can reveal the presence of multiple cysts in the kidneys.

Further evaluation may involve additional imaging studies like CT scans or MRIs to confirm the diagnosis and assess the extent of kidney damage. Blood and urine tests may also be conducted to check kidney function.

In some cases, a biopsy may be recommended to analyze a small sample of kidney tissue. This comprehensive approach helps healthcare providers accurately diagnose bilateral multicystic dysplastic kidney and develop an appropriate treatment plan.

A bilateral multicystic dysplastic kidney can be diagnosed through prenatal ultrasound imaging.
Postnatal ultrasound and renal function tests are used to confirm bilateral multicystic dysplastic kidney.
Genetic testing may be recommended to identify underlying genetic abnormalities associated with bilateral multicystic dysplastic kidney.
Consultation with a pediatric nephrologist for further evaluation and management of bilateral multicystic dysplastic kidney.

What Are the Treatment Options for Bilateral Multicystic Dysplastic Kidney?

Bilateral Multicystic Dysplastic Kidney (MCDK) is a severe congenital condition in which both kidneys are affected and have little or no function. Treatment focuses on supportive care, managing kidney failure, and planning for long-term renal replacement therapy when possible.

Specialized neonatal care: Newborns require immediate evaluation and supportive treatment in a neonatal intensive care unit (NICU).
Management of kidney failure: Fluid balance, electrolyte levels, blood pressure, and nutrition are carefully monitored and treated.
Dialysis: Peritoneal dialysis or hemodialysis may be necessary if sufficient kidney function is absent and the infant is stable enough for treatment.
Kidney transplantation: A kidney transplant is the definitive long-term treatment for children who survive and are suitable candidates.
Treatment of associated abnormalities: Congenital urinary tract or other organ abnormalities are managed according to their severity.
Genetic counseling and family support: Parents may benefit from counseling regarding the condition, prognosis, recurrence risk, and future pregnancies.

Your health is everything - prioritize your well-being today.

Consult Bilateral Multicystic Dysplastic Kidney Doctors Today

What Are the Risk Factors Of Bilateral Multicystic Dysplastic Kidney?

Bilateral multicystic dysplastic kidney is a congenital condition characterized by abnormal kidney development. The risk factors for this condition include:

Genetic factors: Certain genetic mutations can predispose individuals to developing bilateral multicystic dysplastic kidney.
Maternal smoking: Women who smoke during pregnancy may increase the risk of their baby developing this condition.
Maternal alcohol consumption: Excessive alcohol intake during pregnancy can be a risk factor for bilateral multicystic dysplastic kidney in the baby.
Maternal drug use: Use of certain drugs during pregnancy can contribute to the development of this condition in the fetus.
Maternal diabetes: Poorly controlled diabetes in the mother can be a risk factor for bilateral multicystic dysplastic kidney in the newborn.

Frequently Asked Questions

1. Are there specific signs that indicate bilateral multicystic dysplastic kidney?

Yes, specific signs of bilateral multicystic dysplastic kidney include an enlarged abdomen, high blood pressure, and abnormal levels of electrolytes.

2. What precautions should be taken for bilateral multicystic dysplastic kidney?

Regular check-ups and monitoring kidney function are important to manage bilateral multicystic dysplastic kidney.

3. Can bilateral multicystic dysplastic kidney lead to other health issues?

Yes, bilateral multicystic dysplastic kidney can lead to high blood pressure or chronic kidney disease. Regular follow-up with a nephrologist is essential for monitoring kidney function and managing potential complications effectively.