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Table 6 Positive predictive value (PPV), sensitivity, and specificity of preoperative EUS in identifying the pathologic stage in patients with locally advanced rectal cancer

From: Restaging locally advanced rectal cancer by different imaging modalities after preoperative chemoradiation: a comparative study

 

PPV

Sensitivity

Specificity

T stage

   

  T0

37 (7/19)

33 (7/21)

90 (106/118)

  T1

-

-

95 (117/123)

  T2

37 (11/30)

27 (11/41)

80 (79/98)

  T3

52 (40/77)

61 (40/65)

50 (37/74)

  T4

-

-

-

N stage

22 (4/18)

4 (4/109)

52 (15/29)

TNM stage

   

  0

28 (7/25)

35 (7/20)

85 (102/120)

  I

47 (16/34)

32 (16/50)

80 (72/90)

  II

40 (25/63)

53 (25/47)

59 (55/93)

  III

-

-

88 (106/120)

  IV

-

-

-

  1. Data are expressed in percentage (number of patients out of relevant total). Sensitivity and specificity of each T and TNM stage were calculated as the relevant T stage versus all others.
  2. (−) refers to groups with less than 5 patients.
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Radiation Oncology

ISSN: 1748-717X

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