General Information About Pituitary Tumors
Pituitary tumors represent from 10% to 25% of all intracranial neoplasms. Depending on the study cited, pituitary tumors can be classified into three groups according to their biological behavior:[1,2]Benign adenoma.Invasive adenoma.Carcinoma. Adenomas comprise the largest portion of pituitary neoplasms with an overall estimated prevalence of approximately 17%. Only a minority of adenomas are symptomatic. In addition, pituitary adenomas may be distinguished anatomically as intrapituitary, intrasellar, diffuse, and invasive. Invasive adenomas, which account for approximately 35% of all pituitary neoplasms, may invade the dura mater, cranial bone, or sphenoid sinus. Carcinomas account for 0.1% to 0.2% of all pituitary tumors.[6,7]Clinical PresentationThe most characteristic-presenting features of pituitary adenomas include inappropriate pituitary hormone secretion and visual field deficits.Rare signs and symptoms of pituitary disease include:Cranial nerve palsies.Temporal
Treatment Option Overview
There are different types of treatment for children with ependymoma. Different types of treatment are available for children with ependymoma. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment.Because cancer in children is rare, taking part in a clinical trial should be considered. Some clinical trials are open only to patients who have not started treatment. Children with ependymoma should have their treatment planned by a team of health care providers who are experts in treating childhood brain tumors.Treatment will be overseen by a pediatric oncologist, a doctor who specializes in treating children with cancer. The pediatric oncologist
This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER.Childhood Brain Stem Glioma Treatment
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This PDQ summary contains content that is also included in the PDQ Childhood Cerebellar Astrocytoma,PDQ Childhood Cerebral Astrocytoma,and PDQ Childhood Visual Pathway/ Hypothalamic Glioma summaries. In the future,the PDQ Childhood Cerebellar Astrocytoma,PDQ Childhood Cerebral Astrocytoma,and PDQ Childhood Visual Pathway/Hypothalamic Glioma summaries.will be removed from the National Cancer ...
This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER.Pituitary Tumors Treatment
Changes to This Summary (08 / 09 / 2013)
The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above. Editorial changes were made to this summary.
Changes to This Summary (03 / 22 / 2013)
The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.Images were added to this summary and editorial changes were made.
Recurrent Childhood Brain Stem Glioma
Recurrent childhood brain stem glioma is a tumor that has recurred (come back) after it has been treated. If childhood brain stem glioma recurs, it may do so many years after initial treatment. The tumor may come back in the brain or in other parts of the central nervous system.
Treatment of Recurrent Childhood Ependymoma
Recurrence is not uncommon in both benign and malignant childhood brain tumors and may develop many years after initial treatment. For ependymoma, late recurrence beyond 10 to 15 years has been reported.[2,3] Disease generally recurs at the primary tumor site, even in children with malignant ependymomas.[4,5] Systemic relapse is extremely rare. At time of relapse, a complete evaluation for extent of recurrence is indicated for all patients. The need for surgical intervention must be individualized on the basis of the extent of the tumor, the length of time between initial treatment and the reappearance of the recurrent lesion, and the clinical picture. Patients with recurrent ependymomas who have not previously received radiation therapy and/or chemotherapy should be considered for treatment with these modalities.[Level of evidence: 3iiiB] In addition, patients may be candidates for focal retreatment with various radiation modalities, including stereotactic