Pediatric Tumors Flashcards

1
Q

peds cns germ cell xrt

A

RADIOSENSITIVE

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2
Q

peds medulloblastoma xrt done when

A

post-op csi

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3
Q

peds medulloblastoma lat ports csi ant/sup/post border

A

sup/ant/post= flash

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4
Q

peds medulloblastoma spine ports csi sup border

A

sup= inf border of wb

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5
Q

wilm’s xrt low dose

A

10Gy

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6
Q

peds sts xrt post op dose

A

36-50.4 Gy

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7
Q

peds low grade astrocytoma xrt dose

A

50-54 Gy @ 180/fx

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8
Q

peds high grade astrocytoma xrt tx margins

A

2.5 cm margin (2-3 cm)

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9
Q

peds optic glioma rad tx fields

A
  • large tailored fld

- 1.5 cm margin

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10
Q

peds ependymoma tx if csf seeding

A

csi

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11
Q

peds ependymoma csi dose

A

54-59.4 Gy

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12
Q

peds cns germ cell xrt tx

A

low dose csi

  • boost to 50 Gy
  • non-csi= 30-45 Gy to primary mass & supratent vent
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13
Q

peds brain stem glioma xrt margins

A

1.5 cm margin

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14
Q

peds brain stem glioma xrt ant border

A

ant clinoid (avoid optic chiasm ant to sella turcica)

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15
Q

peds brain stem glioma sup border

A

midbrain

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16
Q

peds brain stem glioma post border

A

mid-cerebellum

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17
Q

peds brain stem glioma inf border

18
Q

peds medulloblastoma lat tx field OAR

A
  • shield ant globe
  • oropharynx
  • neck
19
Q

peds medulloblastoma xrt divergence determines ?

A

coll angle

20
Q

peds medulloblastoma xrt csi spine length

A

spine to 2nd/3rd sacral

21
Q

peds medulloblastoma xrt csi gap done how often

A

may be moved/feathered every 10Gy

22
Q

peds medulloblastoma xrt csi dose per day/photon E

A

1.5-1.8 Gy @ 4-6 MV

23
Q

peds medulloblastoma xrt csi boost what area to ? dose

A

boost post fossa to 55.8 Gy

24
Q

peds medulloblastoma xrt chemo

A

chemo before & after

25
peds medulloblastoma xrt wb inf border
cribriform plate & temp fossa
26
peds medulloblastoma xrt wb post border
C2 post
27
peds medulloblastoma wb dose
40 Gy boosted to 50 Gy
28
peds medulloblastoma wb boost area
C2 is boost
29
peds medulloblastoma spine ports inf border
below S2
30
peds medulloblastoma spine ports lat borders
entire vert body + 1 cm margin
31
peds medulloblastoma spine ports dose
36 Gy
32
peds retinoblastoma small tumor xrt dose
1.8-2 Gy to 40-50 Gy
33
peds retinoblastoma small tumor isotopes used for implant
I-125 or Co-60
34
peds neuroblastoma tx xrt stage 3 & 4 dose
21 Gy
35
peds neuroblastoma tx xrt palliation dose
10 Gy
36
peds neuroblastoma xrt shield ? oar
- kidneys | - liver
37
peds neuroblastoma xrt side effect
lung fibrosis
38
wilm's xrt if spillage
radiation to whole abd
39
wilm's xrt if unilateral disease
cover whole width of vert body + 1 cm contralateral to avoid scoliosis
40
wilm's xrt kidney tolerance
15Gy
41
peds sts field margins- necessary to have
spare strip
42
peds sts must include in field?
entire scar