{"id":2838,"date":"2020-10-28T19:07:33","date_gmt":"2020-10-28T16:07:33","guid":{"rendered":"https:\/\/www.intheranostics.com\/prof\/?page_id=2838"},"modified":"2020-11-05T00:03:34","modified_gmt":"2020-11-04T21:03:34","slug":"tiroid-kanseri-sp-bg","status":"publish","type":"page","link":"https:\/\/www.intheranostics.com\/prof\/bg\/tiroid-kanseri-sp-bg\/","title":{"rendered":"\u0420\u0430\u043a \u043d\u0430 \u0449\u0438\u0442\u043e\u0432\u0438\u0434\u043d\u0430\u0442\u0430 \u0436\u043b\u0435\u0437\u0430"},"content":{"rendered":"
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[\/et_pb_text][et_pb_accordion disabled_on=“on|on|on“ _builder_version=“4.4.8″ disabled=“on“][et_pb_accordion_item title=“TANI H\u0130ZMETLER\u0130 – I-131 T\u00dcM V\u00dcCUT TARAMA SINTIGRAFISI“ open=“on“ open_toggle_text_color=“#0ca7c5″ _builder_version=“4.4.8″ toggle_font=“|700|||||||“ toggle_font_size=“18px“]<\/p>\n
Endikasyon<\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisi,<\/b> diferansiye tiroid kanserli hastalarda; <\/span><\/p>\n 1) Tiroidektomi sonras\u0131, radyoaktif iyot ablasyonu \u00f6ncesinde lokorejyonel tutulumu de\u011ferlendirme ve \u00f6l\u00e7mede <\/span><\/p>\n 2) Radyoaktif iyot ile ablasyon veya tedavi sonras\u0131 g\u00f6r\u00fcnt\u00fclemede <\/span><\/p>\n 3) Tiroid kanseri n\u00fcks\u00fc orta veya y\u00fcksek riskli ve Tg \u00f6l\u00e7\u00fcmlerinin g\u00fcvenilir olmad\u0131\u011f\u0131 hastalar\u0131n takibinde endikedir. <\/span><\/p>\n Radyoaktif \u0130yot T\u00fcm V\u00fccut Sintigrafisi Nedir, T\u00fcm\u00f6r Oda\u011f\u0131n\u0131 Nas\u0131l G\u00f6sterir?<\/b><\/span><\/p>\n Teranostik t\u0131p d\u00fcnyas\u0131nda yeni geli\u015fmekte olan bir aland\u0131r. T\u00fcm\u00f6re \u00f6zg\u00fcl bir ila\u00e7 ile g\u00f6r\u00fcnt\u00fcleme yaparak saptanan t\u00fcm\u00f6r ve metastazlar\u0131n\u0131n, nereye gidece\u011fi, ne kadar gidece\u011fi ve hastal\u0131kl\u0131 dokuyu etkileme g\u00fcc\u00fc \u00f6nceden bilinen yine \u00f6zg\u00fcl bir ila\u00e7 ile tedavi edilebildi\u011fi bir yakla\u015f\u0131md\u0131r. Bu yakla\u015f\u0131m, geleneksel t\u0131ptan ki\u015fiye \u00f6zg\u00fc \u00e7a\u011fda\u015f t\u0131p uygulamalar\u0131na ge\u00e7i\u015f yap\u0131lmas\u0131n\u0131 sa\u011flamaktad\u0131r.<\/span><\/p>\n Diferansiye tiroid kanserinde; bir yandan tan\u0131sal ama\u00e7la d\u00fc\u015f\u00fck doz radyoaktif iyot (I-131 <\/span>veya I-123)<\/span> ile t\u00fcm\u00f6ral dokular\u0131n y\u00fcksek duyarl\u0131l\u0131k ve \u00f6zg\u00fcll\u00fckte g\u00f6r\u00fcnt\u00fclenebilmesi, di\u011fer yandan da y\u00fcksek doz radyoaktif iyot (I-131) ile bu t\u00fcm\u00f6ral dokular\u0131n \u00f6zg\u00fcl ve hedefe y\u00f6nelik tedavisi, teranostik uygulamalar i\u00e7in bilinen en eski \u00f6rnektir.<\/span><\/p>\n Tiroid dokusu, v\u00fccuttaki iyotun tamam\u0131n\u0131 kandan alarak kendi i\u00e7erisinde biriktirme konusunda e\u015fsiz bir yetene\u011fe sahiptir. Radyoaktif iyot da t\u0131pk\u0131 iyot gibi, sodyum-iyot simporter (NIS) membran proteinleri arac\u0131l\u0131\u011f\u0131yla tiroid bezine al\u0131narak, tiroid folik\u00fcler h\u00fccrelerinde depolanmaktad\u0131r. Papiller ve folik\u00fcler tip diferansiye tiroid kanserlerinde de, sa\u011fl\u0131kl\u0131 tiroid dokusuna g\u00f6re daha d\u00fc\u015f\u00fck d\u00fczeyde olmakla birlikte, NIS membran proteinleri bulunmaktad\u0131r. I-131 fiziksel yar\u0131 \u00f6mr\u00fc 8.1 g\u00fcn olan bir radyoizotop olup, g\u00f6r\u00fcnt\u00fclemede yararland\u0131\u011f\u0131m\u0131z 364 keV’luk temel gama radyasyonu ile tedavide kulland\u0131\u011f\u0131m\u0131z ortalama 0.192 MeV enerjiye ve dokuda ortalama 0.4 mm menzile sahip temel beta par\u00e7ac\u0131\u011f\u0131 yay\u0131mlamaktad\u0131r. <\/span>G\u00f6r\u00fcnt\u00fclemede kulland\u0131\u011f\u0131m\u0131z di\u011fer bir radyoizotop olan I-123’\u00fcn fiziksel yar\u0131 \u00f6mr\u00fc ise yakla\u015f\u0131k 13 saat olup, g\u00f6r\u00fcnt\u00fclemede 159 keV’luk gama radyasyonundan faydalan\u0131lmaktad\u0131r.<\/span><\/p>\n Anaplastik (andiferansiye) ve med\u00fcller tiroid kanserleri ile lenfoma gibi tiroidin nadir g\u00f6r\u00fclen di\u011fer malign hastal\u0131klar\u0131 ise iyot tutulumu g\u00f6stermediklerinden, radyoaktif iyot bu hastalarda kullan\u0131lmamaktad\u0131r.<\/span><\/p>\n Radyoaktif \u0130yot T\u00fcm V\u00fccut Sintigrafisi Kimlere Uygulan\u0131r?<\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisi diferansiye tiroid kanserli hastalarda, tiroidektomi sonras\u0131, radyoaktif iyot ablasyonu \u00f6ncesinde lokorejyonel tutulumu de\u011ferlendirme ve \u00f6l\u00e7mede, radyoaktif iyot ile ablasyon veya tedavi sonras\u0131 g\u00f6r\u00fcnt\u00fclemede ve tiroid kanseri n\u00fcks\u00fc orta veya y\u00fcksek riskli ve Tg \u00f6l\u00e7\u00fcmlerinin g\u00fcvenilir olmad\u0131\u011f\u0131 hastalar\u0131n takibinde endikedir.\u00a0<\/span><\/p>\n Radyoaktif \u0130yot T\u00fcm V\u00fccut Sintigrafisi G\u00fcvenli midir?<\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisi, tedavi \u00f6ncesi d\u00fc\u015f\u00fck tan\u0131sal dozda radyoaktif iyot izotoplar\u0131 uygulanarak ger\u00e7ekle\u015ftirilen, g\u00fcvenli bir g\u00f6r\u00fcnt\u00fclemedir.<\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut tarama sintigrafisi, hamilelerde uygulanamaz. Emziren annelerde ise emzirmenin sonland\u0131r\u0131lmas\u0131 gerekebilir. \u00a0 \u00a0<\/span><\/span><\/p>\n Radyoaktif \u0130yot T\u00fcm V\u00fccut Sintigrafisi \u00d6ncesi Haz\u0131rl\u0131k <\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisi \u00f6ncesinde; tiroidle ilgili t\u0131bbi hikaye, ameliyat\/patoloji raporlar\u0131 ve \u00f6nceki g\u00f6r\u00fcnt\u00fclemeleri, daha \u00f6nce uygulanm\u0131\u015f radyoaktif iyot tedavi dozlar\u0131 g\u00f6zden ge\u00e7irilir ve gerekti\u011finde a\u015fa\u011f\u0131daki kan testleri yapt\u0131r\u0131l\u0131r:<\/span><\/p>\n Tiroid hormonlar\u0131 (LT4, LT3), iyot i\u00e7eren ila\u00e7 ve yiyecekler, rezidiv tiroid dokusu ve tiroid d\u0131\u015f\u0131 metastatik lezyonlarda radyoaktif iyot tutulumunu engelleyece\u011finden tedavi \u00f6ncesi uygun hasta haz\u0131rl\u0131\u011f\u0131 yap\u0131lmal\u0131d\u0131r. <\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisinin ba\u015far\u0131s\u0131nda kan TSH d\u00fczeyininin y\u00fcksek seviyede olmas\u0131 (TSH >30 mIU\/L) \u00e7ok \u00f6nemlidir. TSH hem sa\u011fl\u0131kl\u0131 tiroid dokusunda, hem de tiroid kanseri h\u00fccrelerinde radyoaktif iyotun tutulumunu art\u0131rmaktad\u0131r. Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisi \u00f6ncesi TSH seviyesini y\u00fckseltmenin birka\u00e7 yolu vard\u0131r:<\/span><\/p>\n Tiroid Hormon Kullan\u0131m\u0131n\u0131n Kesilmesi<\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisinden \u00f6nce tiroid hormonu kullan\u0131m\u0131n\u0131n kesilmesi planlan\u0131yorsa, LT4 hormon (Levotiron, Tefor, Euthyrox, Bitiron) kullan\u0131m\u0131 en az 4 hafta, LT3 hormon kullan\u0131m\u0131 (Tiromel) ise en az 2 hafta s\u00fcreyle kesilmelidir. LT4 kullanan hastalarda ilk iki haftal\u0131k d\u00f6nemde LT3 kullan\u0131labilir. Hedeflenen TSH >30 mIU\/L’dir ve radyoaktif iyot uygulamas\u0131ndan \u00f6nce TSH \u00f6l\u00e7\u00fclmelidir.<\/span><\/p>\n Rekombinant TSH (rhTSH) Kullan\u0131m\u0131<\/b><\/span><\/p>\n Tiroid hormon kullan\u0131m\u0131n\u0131n kesilmesinin alternatifi olan rhTSH (Thyrogen), 24 saat arayla iki doz \u015feklinde, kal\u00e7a kas\u0131na intram\u00fcsk\u00fcler enjeksiyonla uygulan\u0131r. Son rhTSH enjeksiyonundan 24 saat sonra da radyoaktif iyot oral yolla uygulan\u0131r. Rekombinant TSH uyguland\u0131\u011f\u0131 durumlarda tan\u0131sal serum tiroglobulin (Tg) \u00f6l\u00e7\u00fcm\u00fc, son rhTSH enjeksiyonundan 72 saat sonra yap\u0131lmal\u0131d\u0131r.<\/span><\/p>\n D\u00fc\u015f\u00fck \u0130yotlu Diyet<\/b><\/span><\/p>\n Radyoaktif iyot t\u00fcm v\u00fccut sintigrafisinin 2 hafta \u00f6ncesinden ba\u015flanan d\u00fc\u015f\u00fck iyotlu diyet, i\u015flem \u00f6ncesi haz\u0131rl\u0131\u011f\u0131n \u00f6nemli bir par\u00e7as\u0131d\u0131r. Bu diyet, radyoaktif iyot t\u00fcm v\u00fccut sintigrafisinin ba\u015far\u0131s\u0131n\u0131 art\u0131rmaktad\u0131r. <\/span><\/p>\n Radyoaktif \u0130yot Al\u0131m\u0131n\u0131 Engelleyen \u0130la\u00e7lar<\/b><\/span><\/p>\n \u0130la\u00e7lar<\/b><\/span><\/p>\n<\/td>\n \u00d6nerilen kesilme s\u00fcresi<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n Tiyonamid ila\u00e7lar\u0131 (\u00f6rn. propiltiyourasil, metimazol, karbimazol) <\/span><\/p>\n<\/td>\n 3 g\u00fcn<\/span><\/p>\n<\/td>\n<\/tr>\n \u0130yot i\u00e7eren multivitaminler<\/span><\/p>\n<\/td>\n 7-10 g\u00fcn<\/span><\/p>\n<\/td>\n<\/tr>\n Do\u011fal\/sentetik tiroid hormonlar\u0131, triiyodotironin (LT3, Tiromel) i\u00e7in<\/span><\/p>\n<\/td>\n 10-14 g\u00fcn<\/span><\/p>\n<\/td>\n<\/tr>\n Do\u011fal\/sentetik tiroid hormonlar\u0131, tiroksin (LT4,\u00a0 <\/span>Levotiron, Tefor, Euthyrox, Bitiron) i\u00e7in<\/span><\/p>\n<\/td>\n 3-4 hafta <\/span><\/p>\n<\/td>\n<\/tr>\n Kelp, agar, karagenan, Lugol \u00e7\u00f6zeltisi<\/span><\/p>\n<\/td>\n 2-3 hafta, iyot i\u00e7eri\u011fine ba\u011fl\u0131 olarak<\/span><\/p>\n<\/td>\n<\/tr>\n Potasyum iyod\u00fcr\u00fcn sat\u00fcre sol\u00fcsyonu <\/span><\/p>\n<\/td>\n 2-3 hafta<\/span><\/p>\n<\/td>\n<\/tr>\n Topikal iyot (\u00f6rn. cerrahi deri haz\u0131rl\u0131\u011f\u0131)<\/span><\/p>\n<\/td>\n 2-3 hafta<\/span><\/p>\n<\/td>\n<\/tr>\n \u0130ntraven\u00f6z radyografik kontrast ajan, suda \u00e7\u00f6z\u00fcnen<\/span><\/p>\n<\/td>\n 6-8 hafta<\/span><\/p>\n<\/td>\n<\/tr>\n \u0130ntraven\u00f6z radyografik kontrast ajan, ya\u011fda \u00e7\u00f6z\u00fcnen<\/span><\/p>\n<\/td>\n 1-6 ay<\/span><\/p>\n<\/td>\n<\/tr>\n Amiodaron<\/span><\/p>\n<\/td>\n 3-6 ay veya daha uzun<\/span><\/p>\n<\/td>\n<\/tr>\n Sa\u00e7 boyas\u0131<\/span><\/p>\n<\/td>\n 8 hafta<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/b><\/span><\/p>\n Y\u00fcksek Miktarda \u0130yot \u0130\u00e7erdi\u011fi \u0130\u00e7in \u0130zin Verilmeyen\u00a0 <\/span>G\u0131dalar<\/b><\/span><\/p>\n Kaynak<\/b><\/span><\/p>\n<\/td>\n \u00d6rnek\/a\u00e7\u0131klama<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n \u0130yotlu tuz<\/span><\/p>\n<\/td>\n \n<\/td>\n<\/tr>\n S\u00fct \u00fcr\u00fcnleri<\/span><\/p>\n<\/td>\n S\u00fct, yo\u011furt, peynir, dondurma<\/span><\/p>\n<\/td>\n<\/tr>\n Yumurta sar\u0131s\u0131<\/span><\/p>\n<\/td>\n Yumurta ak\u0131 veya yumurta ikamesi <\/span>de\u011fil<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n Deniz \u00fcr\u00fcnleri<\/span><\/p>\n<\/td>\n Kabuklular ve bal\u0131klar, <\/span>ton bal\u0131\u011f\u0131 hari\u00e7<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n Hindi ve ci\u011fer<\/span><\/p>\n<\/td>\n \n<\/td>\n<\/tr>\n Yosun ve yosun \u00fcr\u00fcnleri<\/span><\/p>\n<\/td>\n Karagenan ve aljinat<\/span><\/p>\n<\/td>\n<\/tr>\n S\u00fctl\u00fc \u00e7ikolata<\/span><\/p>\n<\/td>\n \n<\/td>\n<\/tr>\n \u0130yot i\u00e7eren multivitaminler<\/span><\/p>\n<\/td>\n \n<\/td>\n<\/tr>\n K\u0131rm\u0131z\u0131 g\u0131da boyas\u0131 (E127, eritrosin) i\u00e7eren \u00fcr\u00fcnler (\u00f6rn. ila\u00e7 boyas\u0131, gazl\u0131 i\u00e7ecek)<\/span><\/p>\n<\/td>\n \n<\/td>\n<\/tr>\n Tah\u0131llar<\/span><\/p>\n<\/td>\n Her \u00f6\u011f\u00fcnde sadece k\u00fc\u00e7\u00fck porsiyonlar \u015fekinde (\u00f6rn. bir taba\u011f\u0131n d\u00f6rtte biri) al\u0131nabilir.<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/span><\/p>\n \u0130zin Verilen G\u0131dalar<\/b><\/span><\/p>\n Taze meyve ve sebzeler<\/span><\/p>\n Tuzsuz f\u0131st\u0131k\/f\u0131nd\u0131k ve f\u0131nd\u0131k\/f\u0131st\u0131k ezmesi<\/span><\/p>\n Yumurta ak\u0131<\/span><\/p>\n Taze et<\/span><\/p>\n Tah\u0131l\/tah\u0131l \u00fcr\u00fcnleri, y\u00fcksek iyot i\u00e7ermeyen (g\u00fcnde 4 porsiyonla s\u0131n\u0131rl\u0131)<\/span><\/p>\n Makarna, y\u00fcksek iyot i\u00e7ermeyen<\/span><\/p>\n \u015eeker<\/span><\/p>\n J\u00f6le<\/span><\/p>\n Re\u00e7el<\/span><\/p>\n Bal<\/span><\/p>\n Karabiber<\/span><\/p>\n Taze veya kurutulmu\u015f ot ve baharatlar<\/span><\/p>\n T\u00fcm bitkisel ya\u011flar (soya ya\u011f\u0131 dahil)<\/span><\/p>\n Gazoz (K\u0131rm\u0131z\u0131 Boya (E127) i\u00e7ermeyen)<\/span><\/p>\n Kola, diyet kola<\/span><\/p>\n Kahve (instant \/haz\u0131r olmayan)<\/span><\/p>\n \u00c7ay (instant \/haz\u0131r olmayan)<\/span><\/p>\n Limonata<\/span><\/p>\n Meyve sular\u0131<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/span><\/p>\n Radyoaktif \u0130yot T\u00fcm V\u00fccut Sintigrafisi Nas\u0131l Uygulan\u0131r?<\/b><\/span><\/p>\n Radyoaktif iyot uygulamas\u0131 \u00f6ncesinde 4-6 saat a\u011f\u0131zdan yiyecek veya su al\u0131m\u0131 tamamen durdurulmu\u015f olmal\u0131 ve radyoaktif iyot al\u0131nmas\u0131n\u0131 takiben yakla\u015f\u0131k 2 saat boyunca buna devam edilmelidir. <\/span><\/p>\n Bulant\u0131 \u015fikayeti olan hastalar i\u00e7in proflaktik oral antiemetik ila\u00e7 kullan\u0131lmas\u0131 d\u00fc\u015f\u00fcn\u00fcld\u00fc\u011f\u00fcnde, radyoaktif iyot verilmesi \u00f6ncesinde bu tedavinin uygulanmas\u0131 uygun olacakt\u0131r. <\/span><\/p>\n Radyoaktif iyot; s\u0131v\u0131, kaps\u00fcl (I-131 veya I-123, 37-185 MBq (1-5 mCi)) veya enjeksiyona haz\u0131r sol\u00fcsyon (I-123, 37-185 MBq (1-5 mCi)) formunda olup, N\u00fckleer T\u0131p Klini\u011finde oral veya damar yolu arac\u0131l\u0131\u011f\u0131yla, g\u00fcn\u00fcbirlik ayaktan uygulanmaktad\u0131r.<\/p>\n G\u00f6r\u00fcnt\u00fcler yine N\u00fckleer T\u0131p Klini\u011finde, radyoaktif iyot uygulamas\u0131ndan 48 ila 72 saat sonra elde edilmektedir.<\/span><\/p>\n B\u00f6brek fonksiyonlar\u0131 normal olan hastalarda, radyoaktif iyot al\u0131m\u0131n\u0131 takiben, 3 g\u00fcn boyunca, g\u00fcnl\u00fck 2,5-3 L su-s\u0131v\u0131 (s\u00fct hari\u00e7) al\u0131m\u0131 ve s\u0131k idrara \u00e7\u0131kma \u00f6nerilir. B\u00f6ylelikle mesane ve t\u00fck\u00fcr\u00fck bezinin radyasyon dozu minimum d\u00fczeyde tutulmaya \u00e7al\u0131\u015f\u0131l\u0131r. <\/span><\/p>\n G\u00fcnde en az bir kez d\u0131\u015fk\u0131lama, kal\u0131n barsak radyasyon dozunun minimum d\u00fczeye indirilmesi ve g\u00f6r\u00fcnt\u00fc kalitesinin art\u0131r\u0131lmas\u0131 i\u00e7in \u00f6nemlidir. Kab\u0131zl\u0131k durumunda hafif laksatifler kullan\u0131labilir. <\/span><\/p>\n I-131 radyoizotopu uygulanm\u0131\u015f hastalar\u0131n, yak\u0131nlar\u0131n\u0131 gereksiz radyasyondan korumak i\u00e7in baz\u0131 kurallara uymas\u0131 gerekmektedir. T\u00fcrkiye Atom Enerjisi Kurumu (TAEK) taraf\u0131ndan \u00f6nerilen bu k\u0131s\u0131tlamalar, uygulanan doza g\u00f6re de\u011fi\u015fmek ile birlikte \u015fu \u015feklidedir: <\/span><\/p>\n TAEK Taraf\u0131ndan I-131 Uygulanm\u0131\u015f Hastalar \u0130\u00e7in \u00d6nerilen K\u0131s\u0131tlamalar<\/b><\/span><\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=“TEDAV\u0130 H\u0130ZMETLER\u0130 – RADYOAKTIF \u0130YOT TEDAV\u0130S\u0130“ open_toggle_text_color=“#0ca7c5″ _builder_version=“4.4.8″ toggle_font=“|700|||||||“ toggle_font_size=“18px“ open=“off“]<\/p>\n Endikasyon<\/b><\/span><\/p>\n <\/p>\n Radyoaktif iyot<\/b> (I-131, radyoiyot veya atom tedavisi), diferansiye tiroid kanserli hastalarda; <\/span><\/p>\n <\/p>\n 1) Total veya totale yak\u0131n tiroidektomi sonras\u0131 rezid\u00fcel sa\u011fl\u0131kl\u0131 tiroid dokusunun ablasyonu <\/span><\/p>\n <\/p>\n 2) Subklinik mikroskobik hastal\u0131\u011f\u0131n adjuvan tedavisi <\/span><\/p>\n <\/p>\n 3) Makroskobik rezid\u00fcel\/n\u00fcks veya metastatik hastal\u0131\u011f\u0131n tedavisinde endikedir. <\/span><\/p>\n <\/p>\n Radyoaktif \u0130yot Tedavisi Nedir, Nas\u0131l Tedavi Eder?<\/b><\/span><\/p>\n <\/p>\n Teranostik t\u0131p d\u00fcnyas\u0131nda yeni geli\u015fmekte olan bir aland\u0131r. T\u00fcm\u00f6re \u00f6zg\u00fcl bir ila\u00e7 ile g\u00f6r\u00fcnt\u00fcleme yaparak saptanan t\u00fcm\u00f6r ve metastazlar\u0131n\u0131n, nereye gidece\u011fi, ne kadar gidece\u011fi ve hastal\u0131kl\u0131 dokuyu etkileme g\u00fcc\u00fc \u00f6nceden bilinen yine \u00f6zg\u00fcl bir ila\u00e7 ile tedavi edilebildi\u011fi bir yakla\u015f\u0131md\u0131r. Bu yakla\u015f\u0131m, geleneksel t\u0131ptan ki\u015fiye \u00f6zg\u00fc \u00e7a\u011fda\u015f t\u0131p uygulamalar\u0131na ge\u00e7i\u015f yap\u0131lmas\u0131n\u0131 sa\u011flamaktad\u0131r.<\/span><\/p>\n <\/p>\n Diferansiye tiroid kanserinde; bir yandan tan\u0131sal ama\u00e7la d\u00fc\u015f\u00fck doz radyoaktif iyot (I-131 <\/span>veya I-123)<\/span> ile t\u00fcm\u00f6ral dokular\u0131n y\u00fcksek duyarl\u0131l\u0131k ve \u00f6zg\u00fcll\u00fckte g\u00f6r\u00fcnt\u00fclenebilmesi, di\u011fer yandan da y\u00fcksek doz radyoaktif iyot (I-131) ile bu t\u00fcm\u00f6ral dokular\u0131n \u00f6zg\u00fcl ve hedefe y\u00f6nelik tedavisi, teranostik uygulamalar i\u00e7in bilinen en eski \u00f6rnektir.<\/span><\/p>\n <\/p>\n Radyoaktif iyot tedavisi, 1940’l\u0131 y\u0131llardan bu yana tiroidin benign ve malign hastal\u0131klar\u0131n\u0131n tedavisinde s\u0131kl\u0131kla tercih edilen, diferansiye tiroid kanserli hastalarda sa\u011f kal\u0131ma etkisi g\u00f6sterilmi\u015f standart bir uygulamad\u0131r.<\/span><\/p>\n <\/p>\n Tiroid dokusu, v\u00fccuttaki iyotun tamam\u0131n\u0131 kandan alarak kendi i\u00e7erisinde biriktirme konusunda e\u015fsiz bir yetene\u011fe sahiptir. Radyoaktif iyot da t\u0131pk\u0131 iyot gibi, sodyum-iyot simporter (NIS) membran proteinleri arac\u0131l\u0131\u011f\u0131yla tiroid bezine al\u0131narak, tiroid folik\u00fcler h\u00fccrelerinde depolanmaktad\u0131r. Papiller ve folik\u00fcler tip diferansiye tiroid kanserlerinde de, sa\u011fl\u0131kl\u0131 tiroid dokusuna g\u00f6re daha d\u00fc\u015f\u00fck d\u00fczeyde olmakla birlikte, NIS membran proteinleri bulunmaktad\u0131r. I-131 fiziksel yar\u0131 \u00f6mr\u00fc 8.1 g\u00fcn olan bir radyon\u00fcklid olup, g\u00f6r\u00fcnt\u00fclemede yararland\u0131\u011f\u0131m\u0131z 364 keV’luk temel gama radyasyonu ile tedavide kulland\u0131\u011f\u0131m\u0131z ortalama 0.192 MeV enerjiye ve dokuda ortalama 0.4 mm menzile sahip temel beta par\u00e7ac\u0131\u011f\u0131 yay\u0131mlamaktad\u0131r. <\/span><\/p>\n <\/p>\n Anaplastik (andiferansiye) ve med\u00fcller tiroid kanserleri ile lenfoma gibi tiroidin nadir g\u00f6r\u00fclen di\u011fer malign hastal\u0131klar\u0131 ise iyot tutulumu g\u00f6stermediklerinden, radyoaktif iyot tedavisi bu hastalarda kullan\u0131lmamaktad\u0131r.<\/span><\/p>\n <\/p>\n \u00c7o\u011fu hasta i\u00e7in diferansiye tiroid kanserleri \u00e7ok iyi bir prognoza sahip olsa da, hastal\u0131\u011f\u0131n n\u00fcks veya sebat etme oran\u0131 %20-30’a kadar ula\u015fabilir ve n\u00fcks ilk tedaviden on y\u0131llar sonra bile ortaya \u00e7\u0131kabilir. Bu nedenle, kanserin tekrarlay\u0131p tekrarlanmad\u0131\u011f\u0131n\u0131 anlayabilmek i\u00e7in hastalar\u0131n d\u00fczenli takip edilmesi \u00f6nemlidir ve bu izleme hayat boyu devam edilmelidir.<\/span><\/p>\n <\/p>\n Radyoaktif \u0130yot Tedavisi Kimlere Uygulan\u0131r?<\/b><\/span><\/p>\n <\/p>\n Radyoaktif iyot (I-131, radyoiyot veya atom tedavisi) diferansiye tiroid kanserli hastalarda, total veya totale yak\u0131n tiroidektomi sonras\u0131 rezid\u00fcel normal tiroid dokusunun ablasyonu, subklinik mikroskobik hastal\u0131\u011f\u0131n adjuvan tedavisi ve makroskobik rezid\u00fcel\/n\u00fcks veya metastatik hastal\u0131\u011f\u0131n tedavisinde endikedir.\u00a0<\/span><\/p>\n <\/p>\n Cerrahi Sonras\u0131 Radyoaktif \u0130yot Ablasyonu<\/b><\/span><\/p>\n <\/p>\n Ameliyattan birka\u00e7 hafta sonra, cerrahi sonras\u0131 kalan tiroid kanseri h\u00fccrelerini veya normal tiroid dokusunu ortadan kald\u0131rma amac\u0131yla yap\u0131lan radyoaktif iyot uygulamas\u0131d\u0131r. Ablasyon ile ayr\u0131ca v\u00fccudun di\u011fer b\u00f6lgelerine yay\u0131lm\u0131\u015f tiroid kanseri h\u00fccrelerinin de ortadan kald\u0131r\u0131lmas\u0131 ama\u00e7lanmaktad\u0131r. Normal tiroid dokusu kal\u0131nt\u0131lar\u0131n\u0131n ortadan kald\u0131r\u0131lmas\u0131, olas\u0131 n\u00fcks hastal\u0131\u011f\u0131n izlemeni kolayla\u015ft\u0131racakt\u0131r. Bu katk\u0131ya ek olarak radyoaktif iyot ablasyonunun, kanserin boyun veya v\u00fccudun di\u011fer b\u00f6lgelerine yay\u0131ld\u0131\u011f\u0131 durumlarda sa\u011f kal\u0131m oranlar\u0131n\u0131 da iyile\u015ftirdi\u011fi g\u00f6sterilmi\u015ftir.<\/span><\/p>\n <\/p>\n <\/b><\/span><\/p>\n <\/p>\n\n
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