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Living with Clear cell sarcoma of kidney

A rare kidney tumor that often shows up as a lump in the belly and may have spread by the time it is found.

Understanding Clear cell sarcoma of kidney

Clear cell sarcoma of the kidney is a rare, genetic kidney tumor that arises from the renal medulla, the inner part of the kidney.

It is usually one tumor in one kidney and has a tendency to grow into blood vessels. Spread to lymph nodes, bones, lungs, brain, and liver is common at the time of diagnosis. GARD lists onset at a variety of ages.

Signs & symptoms

Symptoms vary from person to person. GARD says they may include:

  • A lump you can feel in the belly
  • Belly or side pain
  • Blood in the urine
  • Low red blood cells (anemia)
  • Tiredness (fatigue)
  • Bone pain or cough if it has spread

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists, genetic specialists and kidney specialists.

  3. Consider genetic testing

    Changes in BCOR are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Kidney Cancer Association may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Genetic specialists (geneticists); Kidney specialists (nephrologists)
Expert care
Expert lists: Kidney Cancer Association
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Kidney Cancer Association and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Has the tumor spread, and which scans will check?
Does the BCOR gene play a role in my child's tumor?
Which specialists will be on my child's care team?

Quick facts

Symptoms usually starta variety of ages
GenesBCOR

GARD lists the BCOR gene for this condition but doesn't describe the cause further.

GeneticKidney

Also known as: ccsk; ccsk - clear cell sarcoma of kidney; childhood clear cell sarcoma of the kidney; childhood kidney clear cell sarcoma; childhood renal clear cell sarcoma; clear cell sarcoma - kidney

Patient organizations

Source: NIH GARD · Clear cell sarcoma of kidneyGARD ID 21905 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Clear cell sarcoma of kidney.

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Explore research for Clear cell sarcoma of kidney

Explore actively recruiting Clear cell sarcoma of kidney studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Clear cell sarcoma of kidney with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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