Input (grade 13): This name comes from the appearance of the cut surface of a solid malignant tumor, with "the veins stretched on all sides as the animal the crab has its feet, whence it derives its name".
Output (grade 12): The veins of the cut surface of solid malignant tumor looks like a crab: "the veins stretched on all sides as the animal the crab has its feet, whence it derives (gets) its name".