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PURPOSE: Complicated gastric lymphatic drainage potentially undermines the utility of sentinel node (SN) biopsy in patients with gastric cancer. Encouraged by several favorable single-institution reports, we conducted a multicenter, single-arm, phase II study of SN mapping that used a standardized dual tracer endoscopic injection technique. PATIENTS AND METHODS: Patients with previously untreated cT1 or cT2 gastric adenocarcinomas 4 cm. We observed no serious adverse effects related to endoscopic tracer injection or the SN mapping procedure. CONCLUSION: The endoscopic dual tracer method for SN biopsy was confirmed as safe and effective when applied to the superficial, relatively small gastric adenocarcinomas included in this study.
Kitagawa et al. (Tue,) studied this question.