A 45 year old female complains of chronic headache. In the last 6 years she has taken medicine to treat a "migraine", but in the last month the pain has become worse and the medication is not working . She has no other symptoms. A skull series revealed a hyperostotic reactive change located on the superior aspect of the right parietal bone. With this history, the physician decides to order a head CT.

With this finding, the patient is scheduled for surgery. The pre-surgical laboratory tests show:

Blood group A+

Hgb 14.5gm/l, Hct 44.5%, with normal differential and normal platelet count of 380.000

Creatinine 0.7 mg/dl and BUN 21mg/dl

Normal urianalysis

At surgery, a biopsy is submitted for a frozen section, revealing the following:

1-Based on these findings, the diagnosis in this case is:

A-Metastatic tumor

B-Schwannoma

C-Glioblastoma multiforme

D-Meningioma

E-None of the above

2-This tumor is more frequent in:

A-Children

B-Middle aged women

C-Middle aged men

D-Old patients

E-None of the above

3-These tumors arise from:

A-Schwann cells

B-Arachnoidal cells

C-Astrocytes

D-Fibroblasts

E-Microglial cells

4-These tumors are:

A-Rapidly growing, malignant tumors

B-Rapidly growing, benign tumors

C-Slowly growing, benign tumors

D-Slowly growing, malignant tumors

E-None of the above

5-The treatment of this patient should include:

A-Surgery

B-Radiotherapy

C-Chemotherapy

D-All of the above

E-None of the above

6-These tumors can be associated with:

A-von Hippel-Lindau syndrome

B-Neurofibromatosis, type 2

C-Dementia

D-None of the above

E-All of the above