Ulyana and 7 other children underwent additional biomaterial research in Moscow.

Ulyana is one of 8 children who are undergoing cancer treatment at the Tomsk Hospital and need to send biomaterials to Moscow. Diagnosing malignant tumors in children is a very difficult task. In order to understand which tumor has settled in the child's body, histological studies are carried out. The trouble is that many childhood malignant tumors are morphologically very similar to each other, and an error in diagnosis leads to fatal consequences - doctors begin to treat the child incorrectly. To avoid such mistakes, the practice of "second look" is adopted all over the world. That is, the laboratory of the hospital where the child was operated, after making a preliminary diagnosis, sends the biopsy material to the reference laboratory for a control study.