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  • Title: Oncological outcome after local excision of rectal carcinomas.
    Author: Borschitz T, Gockel I, Kiesslich R, Junginger T.
    Journal: Ann Surg Oncol; 2008 Nov; 15(11):3101-8. PubMed ID: 18719965.
    Abstract:
    BACKGROUND: Local excision (LE) of T1 rectal cancer yields low recurrence rates. However, more frequent recurrences with unknown states of high-risk T1/T2 tumors are risk factors. The purpose of this study was to evaluate if, after LE, immediate reoperation is required, or awaiting salvage surgery is sufficient. METHODS: 150 T1 and 42 T2 tumors were treated by LE. Immediate reoperation was attempted for unfavorable pT1 (G3-4/L1/V1/R1/Rx/R < or =1 mm) and all pT2 tumors. Three groups were formed. Group A included low-risk pT1 tumors after complete (R0) LE; unfavorable pT1 and all T2 tumors were divided in groups B (immediate reoperation) and C (salvage surgery). RESULTS: Groups A (n = 93) and B (n = 39) showed high tumor-free (TFS) and tumor-related survival (TRS) rates: group A 92% and 98%; group B 86% and 89%. In group C (n = 43), the TFS und TRS were significantly lower with 54% and 72%. Group A showed low recurrence rates and a wide range of International Union Against Cancer (UICC) stages. In group B, similarly low recurrence rates were found, but, in contrast, all recurrences were UICC IV. Group C had significantly higher recurrences rates and, in addition, two-thirds of these patients showed advanced UICC stages (III-IV). CONCLUSIONS: LE of low-risk T1 tumors represents an adequate therapy. Immediate reoperation after LE of pT1 tumors with unfavorable histological finding or pT2 tumors can avoid local recurrences. Thereafter, high TFS rates can be expected in these patients, but metastases cannot be prevented and adjuvant measures are necessary. Awaiting recurrences as in group C leads to bad oncological outcomes with high recurrences and low survival rates.
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