What is knee enchondroma?
What is knee enchondroma?
Enchondroma (en-kon-DRO-ma) is a type of benign (noncancerous) tumor that begins in the cartilage found inside the bones. Enchondromas rarely cause pain or other symptoms, so most remain undiagnosed until x-rays are taken for an unrelated injury or condition.
What is the treatment for enchondroma?
Typically, no treatment is necessary for an enchondroma. Most abnormalities detected within the bone can be rechecked with normal x-rays over a period of time.
Can enchondroma disappear?
An unusual feature of the syndrome is the tendency for the tumors to regress and actually disappear in adulthood (87–89). The enchondromas are found in the metaphyses of long bones and in the iliac crest, which is an unusual location for the tumors in enchondromatosis and Maffucci syndrome (Figure 159-4).
What is the difference between enchondroma and osteochondroma?
Osteochondromas most commonly occur in the hands and feet, and enchondromas typically involve the iliac crests and metaphyses of long bones.
Can enchondroma grow?
In general, after skeletal maturity, enchondromas do not grow and rarely cause pain. Endosteal scalloping may occur with enchondromas. Anteroposterior and lateral plain film evaluation should be undertaken initially.
How is enchondroma diagnosed?
How is an enchondroma diagnosed?
- X-rays. This test uses invisible electromagnetic energy beams to make images of internal tissues, bones, and organs on film.
- Radionuclide bone scans. This is a nuclear imaging test.
- MRI.
- CT scan.
Can an enchondroma grow?
What are the symptoms of Enchondroma?
What are the symptoms of an enchondroma?
- Hand pain, if the tumor is very large or if the affected bone has weakened and caused a hand fracture.
- Enlargement of the affected finger.
- Slow bone growth in the affected area.
Do benign bone tumors cause pain?
Benign tumors may be painless, but often they cause bone pain. The pain can be severe. Pain may occur when at rest or at night and tends to progressively worsen.
What is a benign enchondroma?
An enchondroma is a type of benign bone tumor that originates from cartilage. It is not cancerous. It most often affects the cartilage that lines the inside of the bones. Enchondromas are the most common type of hand tumor. The exact cause of enchondroma is not known.
How big is a tibial enchondroma on the knee?
A 6.5 x 2.5 x 2.5 cm irregular calcified lesion in the proximal right tibial metaphysis has no associated soft tissue mass, bone destruction or endosteal scalloping. The patient proceeded to total knee replacement and biopsy taken at the time confirmed this lesion as an enchondroma.
What kind of bones are affected by enchondroma?
An enchondroma most often affects the cartilage that lines the inside of the bones. It often affects the tiny long bones of the hands and feet. It may also affect other bones such as the thighbone (femur), upper arm bone (humerus), or one of the two lower leg bones (tibia).
What are incidental enchondromas of the knee caused by?
Fig. 2A —Incidental enchondromas in distal femoral diaphysis of 24-year-old woman with anterior knee pain caused by patellofemoral disease. Sagittal scout gradient-echo (TR/TE, 92/1.6; flip angle, 30°) MR image shows two foci of marrow replacement in distal femoral diaphysis (arrows).
Which is the best differential diagnosis for proximal tibia?
The well-defined lesion within the proximal tibia (metaphyseal region) with scalloped margins. The narrow transition zone, lack of periosteal reaction and location favours a benign lesion and the top differential diagnosis is enchondroma with the main differential diagnosis being bone infarct.