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Description of Medical ServiceTARE-Y (also known as selective internal radiation therapy; SIRT) is a medical procedure for the treatment of unresectable HCC. TARE-Y utilises the differential blood supply of the healthy and tumorous liver (80% of the blood supply to the liver is via the portal vein and almost all the blood supply to liver tumours is via the hepatic artery), and involves the delivery of yttrium-90-containing microspheres of 20-60 ým diameter. Two types of microspheres are available: resin (SIR-Spheres/Sirtex Medical Products) and glass (TheraSphere/BTG International Asia). The yttrium-90 (Y-90) emits high energy beta radiation with a mean tissue penetration of 2.5 mm (maximum 11 mm). Thus, the microspheres deliver a cytocidal dose of beta radiation to the cancer cells with minimal irradiation of normal healthy liver tissue. Because of the small size of the microspheres, tumour necrosis is largely caused by radiation, with only a minor contribution from embolisation due to the particles.
Description of Medical ConditionHepatocellular carcinoma (HCC) is a type of primary liver cancer arising from hepatocytes, the main cell type found in the liver. The main risk factors for developing HCC are alcohol abuse and hepatitis B virus (HBV) or C virus (HCV) infection. The causes of HCC vary across countries, with HBV being the main cause in regions where infection is endemic (e.g. parts of Asia) and cirrhosis due to alcohol abuse, HCV or obesity being the main cause in regions where HBV in not endemic (e.g., North America and Europe). HCC is the most common type of liver cancer, and one of the most common types of cancers seen worldwide, being the fifth most common in men and the ninth most common in women. Due to its high mortality to incidence ratio (0.95) it is the third largest contributor to cancer mortality overall.
Reason for ApplicationNew Application
Medical Service TypeTherapeutic
Previous Application NumberNot Applicable
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