An aneurysmal bone cyst is a benign (non-cancerous) tumour of bone composed of multiple blood-filled spaces separated by thin walls of tissue. Despite the name, it is not related to blood vessel aneurysms. The expanding cystic spaces can weaken bone and cause pain or swelling. This article explains the pathology report for aneurysmal bone cyst, …
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Grade 3 chondrosarcoma, also known as high-grade chondrosarcoma, is a type of cancer made up of cartilage that develops within the medulla (central space) of a bone. It is one of the most common types of primary bone cancer in adults. Why is the grade important? Chondrosarcomas are graded based on their appearance under the …
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Grade 2 chondrosarcoma, also known as intermediate grade chondrosarcoma, is a type of cancer made up of cartilage that develops within the medulla (central space) of a bone. It is one of the most common types of primary bone cancer in adults. Why is the grade important? Chondrosarcomas are graded based on their appearance under …
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What is clear cell chondrosarcoma? Clear cell chondrosarcoma is a slow-growing type of cancer made up of cartilage. This type of cancer is typically found in the femur (long bone of the leg) or the humerus (long bone of the arm) where it affects the epiphysis (end of the bone). What is cartilage? Cartilage is …
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Chondroblastic osteosarcoma is a type of bone cancer. This type of cancer can start in any bone in the body, however, most are found in the long bones of the arms and legs. The jaws are also commonly involved. This type of cancer affects both children and older adults. The term “chondroblastic” means that some …
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A central atypical cartilaginous tumour (ACT) is a type of bone cancer. The tumour is called “cartilaginous” because it is made up of cartilage-producing cells. Cartilage is a type of connective tissue normally found throughout the body. These tumours start on the inside of a bone in a space called the “medulla”. Another name for …
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Ewing sarcoma is a rare and aggressive type of cancer that most often affects bones and, less commonly, the soft tissues. It belongs to a group of tumours called sarcomas, which arise from connective tissues such as bone, muscle, or soft tissue. Ewing sarcoma is made up of very immature-appearing cells and is driven by …
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Osteochondroma is the most common non-cancerous type of bone tumour. The name is made up of three parts that come from Greek words – “osteo-“meaning bone, “chondro-” meaning cartilage, and “-oma” which describes an abnormal growth. As the name suggests, the tumour is made up of both bone and cartilage. Most osteochondromas develop in a …
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An enchondroma is a common non-cancerous type of bone tumour made up of cartilage. Enchondromas are usually found in the bones of the hands or feet, but they may occur in almost any bone in the body. They usually affect young and middle-aged adults. Although very rare, a small percentage (less than 1%) of all …
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An osteoblastoma is a rare non-cancerous bone type of bone tumour. These tumours usually range in size from about 2 to 5 cm but they can be much larger, up to 20 cm. They are most frequently found in the bones of the legs, feet, and spine, but other locations are possible. A tumour that …
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