C) mot so vung tren the giai, ung thu thirc quan la mot benh tuang d6i ph6 biSn, nhimg tai My, ung thu thuc quan
Vi fc phan chia giai doan ung thu* tien liet tuyen nhu the nao?
Ung thu tien liet tuyin dugc chSn doan dua vao kk qua sinh thilt tuyln tien liet. Mot khi kham bang tay hoac kk sinh thilt tuyln tien liet. Mot khi kham bang tay hoac kk qua xet nghiem PSA c6 hkt thudng, thi nghi ngd bi ung thu
tien liet tuyln. Khi do, sinh thilt ti6n liet tuyin thudng dugc
khuyen cao. Sinh thiet dugc thyc hien qua nga true trang, dudi huong dan cua may sieu am ngudi ta dung mot kim dudi huong dan cua may sieu am ngudi ta dung mot kim nho de cat mgt mieng mo tien liet tuyen. Bac sT giai phau benh se quan sat mieng mo n^y dudi kinh hien vi de tim t6 bao ung thu. Khi da chan doan ung thu tien liet tuyen dua vao mo sinh thiet bac sT giai phau benh se phan loai mieng mo tir 1 den 5 theo thang Gleason. Thang nay dua tren mot
so dac tinh ve mo hoc cua tk bao ung thu va tinh chat xam
Ian cua te bao ung thu. Khi thang diem tir 2-4 diem, dugc coi nhu la khoi u phat trien cham, 5-6 diem la trung gian, tir 7- nhu la khoi u phat trien cham, 5-6 diem la trung gian, tir 7-
10 diem coi nhu nguy co cao, ung thu phat trien nhanh, tien lugng xau (tu vong). lugng xau (tu vong).
Thang Gleason con giup cho viec dieu tri, danh gia muc do xam Ian cua ung thu. Tuy nhien, ap dung chinh cua thang do xam Ian cua ung thu. Tuy nhien, ap dung chinh cua thang diem Gleason la giup tien lugng nguy co va tu vong do ung thu tien liet tuyen. Mat khac, cac nghien cuu mdi day cho thay rang ngudi cd diem Gleason 2-4, se it nguy co bi chet vi ung thu tien liet tuyen(4-7%) trong 15 nam. Con ngudi co diem 8-10 se cd nguy co cao(60-87%) chet do ung thu tien liet tuyen trong vdng 15 nam.
Vif c phan chia giai doan ung thu* tien liet tuyen nhu the nao? nhu the nao?