1. True or False. Indications for stereotactic surgery include

G7 p.782:125mm

a. biopsy of multiple lesions

true

b. brachytherapy implants

true(catheter placement for brachytherapy)

c. treatment of chronic pain

true(electrode placement for pain, seizures)

d. gamma knife radiosurgery

true(lesion generation for trigeminal pain)

e. biopsy of a deep cerebral lesion

true

f. hematoma evacuation

true(evacuation of intracerebral hemorrhage, cystic fluid)

g. localization of lesion for open craniotomy

true

2. True or False. Stereotactic biopsy contraindications include

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a. coagulopathy

true

b. multiple lesions

false(Multiple lesions are an indication for stereotactic biopsy.)

c. brain stem lesions

false(A brain stem lesion is an indication for stereotactic biopsy.)

d. inability to tolerate general anesthesia

false(can usually tolerate local anesthesia)

e. thrombocytopenia

true(Platelets below 50,000 are an absolute contraindication to biopsy.)

f. inability to cooperate for biopsy

false(may do stereotactic biopsy under general anesthesia)

3.True or False. The yield rate for stereotactic biopsy is

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a. higher for enhancing lesions than for nonenhancing

true

b. lower for enhancing lesions than nonenhancing

false

c. enhancing and nonenhancing lesions have equal yield rates

false

d. yield rates range from 82 to 99%

true

4.True or False. The most common complication of stereotactic surgery is

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a. hemorrhage

true(Most are too small to be clinically significant. The hemorrhage rate is higher in AIDS and in central nervous system lymphoma.)

b. infection

false

c. inability to localize lesion

false

d. inability to provide sufficient tissue quality/quantity for biopsy

false

5. Answer the following regarding stereotactic biopsy:

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a. True or False. The risk for major complication due to stereotactic biopsy is higher in patients with multifocal high-grade gliomas than in patients with AIDS.

false

b. Relative risk for patients that are

     i. immune compromised_____to_____%

0 to 12%

     ii. nonimmune compromised_____to_____%

0 to 3%

     iii. or have glioma_____%

3%