Resumption after transplant❗Leoś begins treatment and preparations for another transplant❗

Until yesterday, in the warm light of summer, he was dividing his time between exploring the world, running after a ball and the presence of his beloved pets. Then came recurring infections, leg pain and a diagnosis that pulled him into another world - hospital corridors and the fight for life...ie with children he didn't make it.
Acute myeloid leukemia with M4 subtype

Highlights

  • Purpose of the collection
    Unreimbursed drugs, transportation to medical facilities, consultations with specialists
  • Diagnosis
    Acute myeloid leukemia with M4 subtype
  • Age of the Ward
    4 years
  • Location
74,747.00 PLN(75%)
Still need - 25,253 PLN
The fundraiser was supported by: 628 people

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Highlights

  • Purpose of the collection
    Unreimbursed drugs, transportation to medical facilities, consultations with specialists
  • Diagnosis
    Acute myeloid leukemia with M4 subtype
  • Age
    4 years
  • Location

Update

RESUMPTION...
Despite a bone marrow transplant just four months ago, Leosia's leukemia has unfortunately returned. During follow-up tests on February 13 2% of blasts, or cancer cells, appeared in the peripheral blood. A few days later A bone marrow biopsy was performed, which confirmed that the disease had returned. The test result showed 19% blasts. Treatment was started immediately. Leoś received another round of chemotherapy and was again admitted to the intensive care unit. at the Cape of Hope Clinic.
A brief return home
Not long ago, the whole family hoped that the most difficult stage was behind them. On December 23, Leoś returned home after a bone marrow transplant. He spent Christmas and New Year's Eve with his parents and younger brother Tymon, who was his donor. Unfortunately, subsequent tests quickly showed that the disease had not gone away.
Another treatment option
Leoś has been back in the hospital since February 23.He has several months of intensive treatment ahead of him. Doctors are planning the next cycles of chemotherapy and preparing for another bone marrow transplant. The search for a donor has already begun. This means more weeks of isolation and a very difficult time for the whole family. However, everyone believes that this stage of treatment will ultimately stop the disease. March 5, 2026
Preparing for a transplant
On October 27, Leoś was transferred from the hematology ward to the transplant ward. at Cape of Hope. The time of preparation for bone marrow transplantation has begun, and a period of complete isolation, which was a huge physical and emotional burden for the five-year-old boy.
14-month-old donor
Leosia's younger brother became the bone marrow donor. Tymon, who was only 14 months old at the time. The tests showed a 100% match. The transplant took place on November 5.
Long weeks of isolation
After Leoś's transplant He spent 14 days in complete isolation, in a closed room. He spent the next 14 days in the post-transplant ward with his mother, still unable to go outside. It was a time of constant vigilance and enormous tension.
Light at the end of the tunnel
Leoś is still in the hospital. with her mother. For a week now, there has been no need for blood transfusions, which is a very important and encouraging sign. The chimerism results show 100 percent, which means that the brother's bone marrow has taken hold. and is working properly. It has been 29 days since the transplant. The medications I am taking, although necessary, significantly lower my immunity. The first complication was DOV, fluid appeared in the abdominal cavity and the liver enlarged. Skin problems associated with the graft and cytomegalovirus infection are, unfortunately, further complications.
Further research and uncertainty
On Wednesday, Leoś will be admitted to the hospital on Borowska Street. Under anesthesia, fluid will be drained from the lungs because infiltrates have appeared there. The test is designed to rule out fungal infection and accurately assess the situation. During the same procedure Doctors will also perform a bone marrow puncture because 6 percent of the disease is still present.  
"We are grateful that Leoś has been fever-free for a week. At the same time, we know how quickly his condition can change, sometimes from hour to hour. It is a very difficult time, full of tension and vigilance. We are with Leoś constantly. We are fighting alongside him, step by step, holding on to the hope that each passing day brings him closer to stability and safety." - parents
December 15, 2025  

Explore the history of

Little explorer

Leo is four years old and has an extraordinary energy that attracts people. He is smart, curious about the world, with a disarming sense of humor. He is happiest on his mother's sister's farm - among chickens, rabbits and big tractors. He loves soccer, bicycles and cars, which he looks out for with delight. Until recently, he was waiting to return to kindergarten after time spent in England. For this meeting with the children, he didn't make it.

An uneasy start

A summer full of activities brought Leosi's first visit to the circus - an event full of excitement, laughter and delight. Soon after, however, leg pain appeared, which was to be the beginning of a completely different story. At first there was talk of minor things, antibiotics were administered, but the anxiety, instead of disappearing, grew with each passing day. On top of that, other infections appeared - a finger, an ear, again a leg that hurt so much that he couldn't walk. Days passed in uncertainty until he ended up in the ED, from where he was transferred to "Cape of Hope."

The moment of diagnosis

The diagnosis sounded like an echo that finds no end - acute myeloid leukemia, subtype M4, secondary. The world, just moments before filled with ordinariness, suddenly died down and gave way to a road leading into the unknown.

Preparations for transplantation

Leoś has started chemotherapy and is being prepared for a bone marrow transplant. He still has two more cycles of treatment ahead of him, and then the transplant - the most important stage in this journey. Dad returned in a hurry to Poland to accompany his sick son. Leoś is also visited by his one-year-old brother, Tymon, whose presence brings a bit of laughter and normality to these days, so needed in a world dominated by the disease. The family knows one thing - every support, every gesture of kindness and good energy is a strength that helps them get through the most difficult moments.

Every day becomes a struggle, but the light of childhood is still reflected in Leosia's eyes.

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  • Step 1 - log in to the e-Tax Office and use the e-PIT service.
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  • 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
    Leon Ciesielski

Contributions and words of support

Ania
April 14, 2026
❤️
20.00 00zł
Lucyna
April 13, 2026
PLN 50.00
Monika
April 13, 2026
140,00 00zł
Tomasz
April 12, 2026
For Warrior Leon
250,00 00zł
Anonymous
April 11, 2026
20.00 00zł
M
April 11, 2026
♥️
PLN 200.00
Cancer Fighters
03 / 10 / 2025
Agata
PLN 1,444.00
Foundation
29 / 08 / 2025
PLN 1,000.00
Peter Christopher
29 / 08 / 2025
PLN 1,000.00
IGA
29 / 08 / 2025
PLN 1,000.00
Marta
31 / 08 / 2025
PLN 1,000.00
Społem
08 / 09 / 2025
PLN 1,000.00
74,747.00 PLN(75%)
Still need - 25,253 PLN
The fundraiser was supported by: 628 people

Share

collection

Set up

piggy bank

Promote the collection

Download and share materials

Donate 1.5% of your tax

Remember, it doesn't cost anything

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Collection always at hand