Table 3: Clinicopathological characteristics of continuous or synchronous CRCs in the secondary PPD cases.

PatientCRC locationHistological typebTNM stage at initial diagnosisInterval of CRC distant metastasis during follow-upa

11RectumMucinous adenocarcinoma (synchronous, not continuous)pT3N0Mx (IIA)N/A
12RectumMucinous adenocarcinoma (synchronous, not continuous)pT3N0Mx (IIA)N/A
13AnorectumAdenocarcinoma (synchronous, not continuous)pT2N0Mx (I)N/A
14AnorectumAdenocarcinomapT1N0Mx (I)N/A
15AnorectumMucinous adenocarcinomapT3N2aMx (IIIB)21 months
16AnorectumAdenocarcinomapT1N0Mx (I)24 months
17RectumAdenocarcinomapT1N1aMx (IIIA)N/A
18AnorectumAdenocarcinomaUnknownbUnknownc
19AnorectumAdenocarcinomapT2N0Mx (I)20 months
20AnorectumAdenocarcinomacT2N0Mx (I)N/A
21AnorectumAdenocarcinomapT3N1bMx (IIIB)13 months
22AnorectumAdenocarcinomapT3N2bMx (IIIC)N/A
23RectumAdenocarcinomaUnknowncUnknownd

aN/A: not applicable, free of distant metastases. bContinuous lesion if no note in brackets. cLoss of follow-up. dPatient refused further survey and treatment.