Sentinel Lymph Node Detection in Gastric Cancer Using a Dual Tracer (Superparamagnetic Iron Oxide and Methylene Blue): A Prospective Study With Histological and OSNA Validation

"Participation in the study did not alter the indications or standard surgical technique. The only additional intervention consisted of intraoperative administration of SPIO, performed either laparoscopically or conventionally, as appropriate.~Immediately after removal of the surgical specimen : Submucosal instillation of methylene blue was then performed at the tumour periphery"

Analysed the performance of one-step nucleic acid amplification (OSNA) versus conventional histology and applied pooling analysis with OSNA in non-sentinel nodes