Myeloblastoma is one of the most common childhood tumors. Among children under 10 years of age, the incidence rate is about 20% to 30% of all tumors. The peak age of onset is 5 years, and men are slightly more than women. The shish is located in the posterior cervical fovea, near the cerebellar vermis and the fourth ventricle midline, and advanced tumors spread in the cerebrospinal fluid. Typical clinical manifestations are mainly related to the increased intracranial pressure caused by tumor occupying the posterior cranial fossa and blocking the fourth ventricle or midbrain aqueduct: headache, nausea, vomiting, blurred vision, and balance function caused by tumor compression on the cerebellum Obstacles, such as walking instability, ataxia, etc.
Proton pichoq bilan davolash
Shuning uchun proton pichoq bilan davolash an'anaviy radioterapiya bilan taqqoslaganda yaxshiroq fizik va biologik xususiyatlarga ega va tananing chuqur qismlarida o'smalarga yetadigan nurlanish dozasiga ega. Og'ir ionlar va protonlar teri ostidagi 30 sm chuqurlikdagi to'qimalarga etib borishi mumkin, bu esa o'smani boshqarish qobiliyatini sezilarli darajada yaxshilaydi; an'anaviy nurlanish usullari bilan taqqoslaganda, o'sma joyiga etib boradigan radiatsiya energiyasini sezilarli darajada oshirish mumkin (proton pichoqni 20% ga oshirish mumkin), bu o'smaning atrofini sezilarli darajada kamaytiradi. Oddiy to'qimalarning shikastlanishi va yon ta'siri; radioterapiya va kimyoviy terapiyani bir vaqtning o'zida qo'llash bilan normal to'qimalarning toksikligini kamaytirish; kunlik nurlanish dozasini oshirish orqali davolash kursini sezilarli darajada qisqartirish; ikkinchi birlamchi o'smalar paydo bo'lishini kamaytirish.
