Osteosarcoma! Please support my 16-year-old son during this difficult time!

Highlights

  • Diagnosis
    Osteosarcoma with metastases to the lungs
  • Age of the Ward
    16 years
  • Location
  • Mentee
    Mateusz Rolniczak

Explore the history of

Leg pain

During last year’s summer vacation, my son Mateusz started having pain in his leg. I thought it was just a case of overuse, nothing serious, and that the pain would go away in a few days and we’d forget all about it. However, the discomfort persisted, and his leg swelled up significantly. All these symptoms made it impossible for my son to move around normally.

The doctor took the situation very seriously. He ordered one test after another in quick succession, and each new referral made us more and more anxious. We felt a profound sense of helplessness and fear of what we might hear.

Diagnosis, Surgery, and Side Effects

Shortly thereafter, we received our son’s diagnosis: osteosarcoma with metastases (META) to the lungs. Since then, Mateusz has undergone surgery to remove the tumor from his left femur, followed by reconstruction with an artificial joint. He has also undergone several thoracotomies.

Treatment according to the standard protocol has now been completed. However, due to the metastases, the doctors decided to administer several additional cycles of chemotherapy. This has led to a number of flu-like side effects, such as fatigue and a runny nose.

In addition, my son is struggling with obesity and is under the care of a diabetes specialist.

A New Reality

Before my son fell ill, I worked and lived in Ustka. Because of his health, I quit my job so I could be with him all the time at the Mother and Child Institute in Warsaw, where he is receiving treatment.

Mateusz's dad works abroad to provide for his family in this new reality.

Mateusz's Interests

Before he got sick, my son loved playing soccer and was always watching his favorite players. He watched games and cheered them on faithfully. In his quieter moments, he played video games and built with LEGO bricks, and in the evenings he usually listened to his favorite music.

Please support me

Everyday life is very difficult these days.

My son misses his normal life, misses his dad, and feels constant stress. The costs of his treatment are getting higher and higher, and we can’t afford them on our own, so I’m asking for your help during these difficult times. We’ll be immensely grateful for any support and every kind word.

Promote collection

Download the prepared graphics and share them on social media. Encourage your friends to support and share. Put up a poster in your workplace, school, store. Every piece of information increases the chance of winning the Wards!

Every zloty and every share makes a huge difference. Help reach as many people as possible and increase the chances of this collection. Tell your friends, family and community - together we can do more!

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Donate 1,5% tax

Your e-PIT is the easiest way to settle your taxes. The IRS pre-fills your tax returns, and you can verify, approve or correct them.

  • Step 1 - log in to the e-Tax Office and use the e-PIT service.
  • Step 2 - in the PIT return form, click on Select an organization.
  • Step 3 - in the list of organizations, search for Cancer Fighters Foundation or enter the KRS number 0000581036.
  • Step 4 - in the field with the specific goal of 1.5%, indicate the Ward by entering the following data:
  • KRS No.
    0000581036
  • Specific objective
    Mateusz Rolniczak

Contributions and words of support

Cancer Fighters
July 3, 2026
PLN 30,000.00
Cancer Fighters
July 3, 2026
PLN 30,000.00
PLN 30,000.00(100%)
Goal achieved!
Supported by: 1 people
  • Purpose of the collection
    Medications, ongoing treatment costs, rehabilitation, transportation, visits to specialists, specialized diet

Promote the collection

Download and share materials

Donate 1.5% of your tax

The Foundation's beneficiaries

Download QR code

Moneybox at hand

Osteosarcoma! Please support my 16-year-old son during this difficult time!

PLN 30,000.00(100%)
Goal achieved!
Supported by: 1 people
  • Purpose of the collection
    Medications, ongoing treatment costs, rehabilitation, transportation, visits to specialists, specialized diet

Highlights

  • Diagnosis
  • Age
    16 years
  • Location
  • Collection
    Mateusz Rolniczak

Explore the history of

Leg pain

During last year’s summer vacation, my son Mateusz started having pain in his leg. I thought it was just a case of overuse, nothing serious, and that the pain would go away in a few days and we’d forget all about it. However, the discomfort persisted, and his leg swelled up significantly. All these symptoms made it impossible for my son to move around normally.

The doctor took the situation very seriously. He ordered one test after another in quick succession, and each new referral made us more and more anxious. We felt a profound sense of helplessness and fear of what we might hear.

Diagnosis, Surgery, and Side Effects

Shortly thereafter, we received our son’s diagnosis: osteosarcoma with metastases (META) to the lungs. Since then, Mateusz has undergone surgery to remove the tumor from his left femur, followed by reconstruction with an artificial joint. He has also undergone several thoracotomies.

Treatment according to the standard protocol has now been completed. However, due to the metastases, the doctors decided to administer several additional cycles of chemotherapy. This has led to a number of flu-like side effects, such as fatigue and a runny nose.

In addition, my son is struggling with obesity and is under the care of a diabetes specialist.

A New Reality

Before my son fell ill, I worked and lived in Ustka. Because of his health, I quit my job so I could be with him all the time at the Mother and Child Institute in Warsaw, where he is receiving treatment.

Mateusz's dad works abroad to provide for his family in this new reality.

Mateusz's Interests

Before he got sick, my son loved playing soccer and was always watching his favorite players. He watched games and cheered them on faithfully. In his quieter moments, he played video games and built with LEGO bricks, and in the evenings he usually listened to his favorite music.

Please support me

Everyday life is very difficult these days.

My son misses his normal life, misses his dad, and feels constant stress. The costs of his treatment are getting higher and higher, and we can’t afford them on our own, so I’m asking for your help during these difficult times. We’ll be immensely grateful for any support and every kind word.

Donate 1.5% of your tax

Your e-PIT is the easiest way to settle your taxes. The IRS pre-fills your tax returns, and you can verify, approve or correct them.

Step 1

Log in and use the Your e-PIT service

Step 2

On the PIT return form, click Select Organization

Step 3

In the list of organizations, search for Cancer Fighters Foundation or enter the KRS number 0000581036

Step 4

In the field with the specific goal of 1.5%, indicate the Ward by entering the following data:
  • KRS No.
    0000581036
  • Specific objective
    Mateusz Rolniczak

Promote the collection

Download the prepared graphics and share them on social media. Encourage your friends to support and share. Put up a poster in your workplace, school, store. Every piece of information increases the chance of winning the Wards!

Every zloty and every share makes a huge difference. Help reach as many people as possible and increase the chances of this collection. Tell your friends, family and community - together we can do more!

Facebook
X / Twitter
WhatsApp
LinkedIn
Email
Threads

Contributions and words of support

Cancer Fighters
July 3, 2026
PLN 30,000.00
Cancer Fighters
July 3, 2026
PLN 30,000.00