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Table 5 Development of grade ≥ 2 lymphopenia based on vertebral V15, vertebral V2.5, and spleen V10 thresholds

From: Vertebral body and splenic irradiation are associated with lymphopenia in localized pancreatic cancer treated with stereotactic body radiation therapy

Vertebral V15

Grade ≥ 2 lymphopenia

P value

Yes, n (%)

No, n (%)

< 5.84%

35 (34.0%)

68 (66.0%)

0.002

≥ 5.84%

19 (65.5%)

10 (34.5%)

Vertebral V2.5

Grade ≥ 2 lymphopenia

P value

Yes, n (%)

No, n (%)

< 48.36%

10 (23.8%)

32 (76.2%)

0.005

≥ 48.36%

44 (48.9%)

46 (51.1%)

Spleen V10

Grade ≥ 2 lymphopenia

P value

Yes, n (%)

No, n (%)

< 4.17%

18 (26.9%)

49 (73.1%)

< 0.001

≥ 4.17%

36 (56.2%)

28 (43.8%)