Case study 1 A 74-year-old male patient came to the hospital for the evaluation of general weakness and headache that started 10 days ago. He was found to have hepatocellular carcinoma. The tumor size was growing at a rate of 0.3 𝒄𝒎𝟑 /𝒅𝒂𝒚. The oncologist discovered that the initial volume of the spherical 4 tumor was 2 cm in radius (given that volume of a sphere is 𝜋𝑟 3 ) 3 1- Calculate the tumor size using the mathematical model after one month. 2- Referring to the given link: Liver Cancer Stages https://www.roswellpark.org/cancer/liver/diagnosis/staging identify in which cancer stage is this patient. Case study 2 A 55-year-old female patient was diagnosed with hepatocellular carcinoma 6 months ago. She was in cancer stage 3 (tumor size 4 3.5 cm in radius) (given that volume of a sphere is 𝜋𝑟 3 ) 3 The oncologist discovered that the initial volume of the spherical tumor was 38.8 𝒄𝒎𝟑 1- Find the rate of tumor growth using the mathematical model in 𝒄𝒎𝟑 /𝒎𝒐𝒏𝒕𝒉 2- Find the tumor volume after 1 year