An acute angle (acute meaning sharp) is an angle smaller than a right angle (it is less than 90 degrees). Related pages[change | change source] This short article about mathematics can be made longer. You can help Wikipedia by adding to it.
Chondrosarcoma is a cancer composed of cells derived from transformed cells that produce cartilage. Chondrosarcoma is a member of a category of tumors of bone and soft tissue known as sarcomas. About 30% of skeletal system cancers are chondrosarcomas. It is resistant to chemotherapy and radiotherapy. Unlike other primary bone cancers that mainly affect children and adolescents, chondrosarcoma can present at any age.
Chondroma is a rare, benign tumor that tends to arise at the base of the skull, especially in the area near the pituitary gland. These tumors are generally very slow-growing and may be present for a long time before causing any symptoms. The malignant (cancerous) form of chondroma is chondrosarcoma. There are several different types of chondrosarcoma, including conventional, clear cell, mesenchymal, and dedifferentiated. Conventional chondrosarcoma are further subdivided into grade I, grade II, and grade III. Location