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Table 1. Clinical and salvage treatment information for study patients (
Continued
)
Reirradiation
volume
Lesions/
surgery sites
Resection or
metastasectomy
results
Interval
RT1 RT2 (mo)
RT
age (Y)
CSI dose
(Gy)
RT2 irradiation sites
Maximal
reirradiation
dose (Gy) and site
RT2
failure
Patient
Site 1 (Gy)
Site 2 (Gy)
Site 3 (Gy)
25
CSI
1/1
NTR
29.9
6.6 39.6 4
th
ventricle (54.0)
—
— Cerebellum/stem
(113.4)
26
CSI
1/1
GTR
35.7
5.1 39.6 4
th
ventricle (54.0)
—
— Cerebellum/stem
(113.4)
27
CSI
1/1
GTR
4.2
5.4 39.6 L36 S1 (59.4)
—
— Cerebellum/stem (99.0)
28
CSI
4/3
STR
13.0
5.8 39.6 Lateral ventricles
(59.4)
Conus (54)
Sacrum (59.4) Cerebellum/stem (99.0) Metastases
29
CSI
1/1
GTR
22.3
4.7 39.6 Infundibular recess
(54.0)
—
— Cerebellum/stem (99.0)
30
CSI
3/1
GTR
20.5
4.0 39.6 Lateral ventricles
(59.4)
—
— Cerebellum/stem (99.0)
31
CSI
2/2
GTR
32.5
5.8 37.6 Frontal (55.8)
Finecal sac (57.6)
— Cerebellum/stem (93.6)
32
CSI
3/3
GTR
23.1
9.3 39.6 Foramen rotundum
(54.0)
L1 (54.0)
C7 (52.2)
Parietal (93.6)
33
CSI
1/1
GTR
23.6
4.2 41.4 Lateral ventricle (54.0)
—
— Cerebellum/stem (99.0)
34
CSI
1/1
GTR
24.3
4.8 39.6 Ca update (59.4)
— Cerebellum/stem (99.0)
35
CSI
5/3
GTR
25.3
13.3 39.6 T6 (54)
T12 (54.0)
— Cerebellum/stem (99.0)
36
CSI
1/1
GTR
28.0
3.7 39.6 Sylvian fissure (59.4)
—
— Cerebellum/stem (99.0) Metastases
37
CSI
2/2
GTR
43.7
10.2 39.6 Cervicomodullary
(57.6)
Conus (57.6)
— Parietal (93.6)
Metastases
38
CSI
1/1
STR
63.3
8.5 39.6 Fontal (59.4)
—
— Cerebellum/stem (99.0)
Abbreviations:
SRS = stereotactic radiosurgery; CSI = craniospinal irradiation; NTR = near-total resection; GTR = gross total resection; STR = subtotal resection; RT = radiation therapy; RT1=
initial radiotherapy; RT2 = reirradiation; CP = cerebellopontine.
Ependymoma reirradiation
d
T. E. M
ERCHANT
et al
.
91