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  • Title: Risk factors for local recurrence of superficial esophageal cancer after treatment by endoscopic mucosal resection.
    Author: Esaki M, Matsumoto T, Hirakawa K, Nakamura S, Umeno J, Koga H, Yao T, Iida M.
    Journal: Endoscopy; 2007 Jan; 39(1):41-5. PubMed ID: 17252459.
    Abstract:
    BACKGROUND AND STUDY AIM: The aim of this study was to elucidate the risk factors for local recurrence after endoscopic mucosal resection (EMR) treatment for superficial esophageal cancer (SEC). PATIENTS AND METHODS: We performed a retrospective analysis of the clinical course of 62 patients with 64 SECs that were treated by EMR between 1993 and 2004. Follow-up examinations by chromoscopy with iodine solution and biopsy were performed 3 months, 6 months, 12 months, and then annually after EMR. Local recurrence was defined as a histologically confirmed finding of cancer cells at the site of the preceding EMR. The contributions of lesion-related and procedure-related factors to local recurrence were analyzed retrospectively. RESULTS: Local recurrence was detected in 14/64 SECs 3-36 months after EMR. Of the lesion-related factors we assessed, local recurrence was found to be more frequent in SECs with a larger diameter (P = 0.01), larger circumferential spread (P = 0.04), or deeper invasion (P = 0.04), although the last two factors failed to demonstrate statistical significance after correction for multiple testing. Piecemeal resection did not increase the risk of local recurrence (P = 0.11), but the need for adjunctive coagulation therapy was found to increase the risk of local recurrence (P = 0.06). CONCLUSIONS: Larger SECs are associated with a higher risk of local recurrence after EMR. In patients with residual lesions, coagulation therapy does not seem to be adequate as additional endoscopic treatment.
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