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Table 2 Radiotherapy structure volumes (n=22)

From: Low rate of lymphedema after extended pelvic lymphadenectomy followed by pelvic irradiation of node-positive prostate cancer

Structure/Volume

Mean volume (cm3)

Range (cm3)

PTV T

158

83-272

(prostate/vesicles a )

  

PTV N

711

161-1361

(pelvic nodes b )

  

Treated volume c

1349

520-2107

Irradiated volume d

5832

3630-10810

  1. aVesicles included in PTV T in 7 (32%) patients.
  2. bDefined according to RTOG in 18 (82%) patients.
  3. cThe volume of the body treated to a dose ≥ 47.5 Gy (95% of the prescribed dose).
  4. dThe volume of the body treated to a dose ≥ 25 Gy (50% of the prescribed dose).