A 22-year-old woman who plays ice hockey

sustains a knee injury during a match. Imaging of the knee is negative for bone fractures but does show, as an incidental finding, growth

into the bone called an enchondroma, a benign cartilage neoplasm. A biopsy is

performed. Histologic analysis shows cartilage lacking elastic fibers and type

II collagen fibers dominate here. What type of tissue is found in this lesion?