Results
Two-hundred individual neck level specimens were analysed. Seventy-seven levels were considered cN+ve, of which 83.1% (64/77) were also pN+ve. One hundred and twenty-three levels were considered cN0 of which 13% (16/123) were proven as pN+ve, demonstrating occult disease across various levels. This occult disease was identified in level II in seven patients, level III in six patients and level IV in three patients, with no occult disease seen in cN0 level I or V.