No one knew what was wrong with her — until an MRI found incurable disease. She turned her harrowing journey into unique art.

Nardiz Cooke was alarmed when she felt a lump in her right breast in late 2018. Her OB-GYN wasn’t: Cooke was 38 and had no family history of cancer. Cooke’s doctor diagnosed her with fibrosis, a common condition that causes tissue to feel…