入試英語によくあるは悪文。
関係代名詞や接続詞で文つなぎ、理解しにくい長文で、読む人を悩ませる。
こんな感じの英文では。
Pancreatic cancer begins in the tissues of your pancreas which an organ in your abdomen that lies horizontally behind the lower part of your stomach, and your pancreas releases enzymes that aid digestion and hormones th