Bone metastasis may be the first sign that you have cancer, or bone metastasis may occur years after cancer treatment. Bone metastasis can cause pain and broken bones. With rare exceptions, cancer that has spread to the bones can't be cured. Treatments can help reduce pain and other symptoms of bone metastases.
Medical Definition of Chondrichthyes. : a class comprising cartilaginous fishes with well-developed jaws and including the sharks, skates, rays, chimeras, and extinct related formsâcompare cyclostomata.
Browse by. The role of sharks in the ecosystem. Fishes of the class Chondrichthyes are commonly referred to as the âcartilaginous fishesâ as they have skeletons made of cartilage, unlike most other fishes whose skeletons are made of bone.