Table 3 Characteristics of patients who developed metachronous lesions
Patient | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
Initial tumour site | HF | Rectum | Caecum & AC | Rectum | DC & SC | AC |
Histology/stage | AdenoCa T3N0M0 | AdenoCa T3N2M0 | AdenoCa T3N2M0 | AdenoCa T3N0M0 | AdenoCa T2N0M0 | AdenoCa T3N2M1 |
Margins of initial resection | Clear Proximal - 17 cm Distal - 3 cm | Clear Proximal - 13 cm Distal - 2 cm | Clear Proximal - 5.5 cm Distal - 8.5 cm | Clear Proximal - 11.5 cm Distal - 2.5 cm | Clear Proximal - 2 cm Distal - 3.5 cm | Clear Proximal - 20 cm Distal - 6 cm |
Surgery | Right Hemicolectomy | Low Anterior Resection | Right Hemicolectomy | Low Anterior Resection | Left Hemicolectomy | Right Hemicolectomy |
Synchronous polypectomy numbers | 1 | 4 | 2 | 2 | 1 | 1 |
Polypectomy site(s) | DC | a) SC b) SC c) DC d) DC | a) AC b) TC | a) Rectum b) DC | TC | SC |
PS Proximal/Distal to tumour | Distal | Proximal | Distal | Proximal | Proximal | Distal |
Polyp(s) morphology | Pedunculated | a) Pedunculated b) Pedunculated c) Sessile d) Sessile | a) Sessile b) Sessile | a)Pedunculated b) Sessile | Sessile | Pedunculated |
Polyp histology | TA LGD | a) TA LGD b) TA HGD c) HP d) HP | a) HP b) HP | a) TA LGD b) TA LGD | TA LGD | TVA HGD |
Size (mm) | 15 | a) 15 b) 12 c) 6 d) 7 | a) 3 b) 3 | a) Missing b) Missing | 3 | 10 |
All PS included in resection | No (Group B) | No (Group B) | No (Group B) | Yes (Group A) | No (Group B) | No (Group B) |
Site of metachronous tumour | DC | DC | TC | DC | HF | TC |
Interval to development of metachronous lesion (months) | 32 | 11 | 11 | 36 | 83 | 9 |
Metachronous lesion at colonic segment of previous synchronous PS? | Yes | Yes | Yes | Yes | No | No |