What is Calvarial lesion?
What is Calvarial lesion?
Calvarial lesions are often asymptomatic and incidentally discovered on radiological images obtained for other reasons. Clinical suspicion is based on localized pain or the finding of a visible or palpable mass or defect. Primary neoplasms of the calvarium account for 0.8% of all bone tumors.
What do lesions on the skull mean?
Bone lesions are areas of bone that are changed or damaged. Causes of bone lesions include infections, fractures, or tumors. When cells within the bone start to divide uncontrollably, they are sometimes called bone tumors. Most bone lesions are benign, meaning they are not cancerous.
Are lytic lesions always cancer?
Lytic lesions — spots where bone tissue has been destroyed — can be seen in other cancers, including breast cancer, lung cancer and kidney cancer. They can also be seen with infections of bone and even in some benign conditions.
Can brain lesions disappear?
Disease processes that have been associated with disappearing brain lesions include epilepsy, where in which MRI abnor- malities can disappear once seizures have been medically controlled.
What’s the difference between a tumor and a lesion?
A bone lesion is considered a bone tumor if the abnormal area has cells that divide and multiply at higher-than-normal rates to create a mass in the bone. The term “tumor” does not indicate whether an abnormal growth is malignant (cancerous) or benign, as both benign and malignant lesions can form tumors in the bone.
Can a calvarial lesion be benign or malignant?
Calvarial lesions can be benign or malignant. Although the majority of skull lesions are benign, it is important to be familiar with their imaging characteristics and to recognise those with malignant features where more aggressive management is needed.
How is GKS used to treat calvarial metastases?
GKS is an effective treatment modality for patients with metastases to the calvarial bones or skull base. For patients with superficial calvarial lesions, a novel approach with bolus application resulted in excellent rates of local control. GKS provides an effective therapeutic alternative to conven …
How are calvarial lesions discovered in the brain?
Calvarial lesions are often asymptomatic and are usually discovered incidentally during computed tomography or magnetic resonance imaging of the brain. Calvarial lesions can be benign or malignant.
How are calvarial and skull base metastases treated?
For 7 calvarial lesions, a novel technique, in which a bolus was placed over the treatment site, was used. For determination of local control or disease progression, radiation therapy data were examined and posttreatment MR images and oncology records were reviewed.