Obtaining tumor-free margins is the single most important factor in ablative tumor surgery. A margin of 5 mm of uninvolved tissue around the tumor is in accordance with an R0 status in oral squamous cell carcinoma.
Technique
Palpation of the tumor. Excision of the primary tumor by utilization of a 5-mm margin around the visible and palpable tumor in the transverse and vertical dimensions.Clockwise mapping of the tumor in the horizontal dimension. Excision of four random tissue pieces of 2-mm width for frozen sectioning.Excision of another two semilunar basal random tissue pieces of 2-mm thickness.
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