The Medica Radioactive Microspheres segmentation by application isolates the therapeutic indications that drive demand. Primary liver cancer, chiefly hepatocellular carcinoma, accounts for the largest share, reflecting its status as the most common indication for intra‑arterial radioembolisation; clinical guidelines and reimbursement pathways translate into roughly 45 % of total market revenue. Metastatic liver cancer, arising from colorectal or breast primaries, follows with an estimated 30 % contribution, as expanding evidence supports microsphere use for tumor burden reduction and survival extension. Lung cancer represents a growing niche, currently about 20 % of sales, driven by recent trials exploring bronchial artery delivery for localized disease. The residual other oncology indications—including pancreatic and renal tumors—collectively comprise approximately 5 % of the market, indicating limited but emerging adoption. Each application segment influences overall market size through distinct clinical adoption curves, reimbursement structures, and geographic penetration, enabling analysts to forecast revenue streams with granularity.