From the bottom of my heart, I express my deep, sincere gratitude to the oncologist Saryev Mukhammetsakhet Nurberdievich for the successful operation on the ninth of July 2021 to remove the tumor. Also for careful care after the operation. I would like to note the high professionalism of the doctor, skill, sensitivity and ability to find an approach to the patient. I thank you not only from myself, but also from my whole family, who are infinitely grateful to you for your work and care for my health. Thank you so much.