1. Answer: C. McCune-Albright syndrome consists of the triad of polyostotic fibrous dysplasia, hyperpigmented skin macules, and precocious puberty.

2. Answer: C. Approximately 40% of melanomas metastasize to the brain. Twenty-one percent of lung tumors and 9% of breast cancer go the brain.

3. Answer: A. Primary lung cancer accounts for half of all metastatic brain tumors.

4. Answer: C. Headache (42%) and seizure (21%) are the two most common presenting symptoms.

5. Answer: A. Approximately three quarters of patients with brain stem gliomas are under age 20. There is a bimodal distribution to these tumors with the peak incidence occurring in the latter part of the first decade of life and the second peak occurring in the fourth decade of life.

6. Answer: B. Melanoma has the highest propensity to be hemorrhagic. There is no cure. Increased survival may be seen if whole brain radiation therapy (WBRT) is used in combination with tumor resection.

7. Answer: B. On presentation, approximately 40% of patients have symptoms of hypothyroidism. A quarter of patients have signs of adrenal failure (orthostatic hypotension, hypoglycemia, hypoglycemia), and about 20% have signs of diabetes insipidus.

8. Answer: A. With retrochiasmal locations, the patient typically presents with hydrocephalus with signs of increased intracranial pressure such as papilledema and horizontal diplopia.

9. Answer: B. Surgery remains the most effective treatment for this tumor. Postoperative radiation therapy improves survival; however, surgery remains the most effective treatment. Chemotherapy is the most disappointing.

10. Answer: B. GBM is the most common and unfortunately the most aggressive primary brain tumor. It is highly malignant and infiltrates the brain extensively.