Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

55 questions · 55 findings · 3 reviews · Oral medicine and oral cancer

No studies found 14 · 25.5%GRADE not reported 5 · 9.1%Very low 19 · 34.5%Low 8 · 14.5%Moderate 9 · 16.4%High 0 · 0%

Elective neck dissection (at time of primary tumour resection) vs Therapeutic (delayed) neck dissection

Recurrence · Adults with oral cavity cancer (tongue or floor of mouth) and clinically negative neck nodes

Elective neck dissection (at time of primary tumour resection) probably leads to lower recurrence compared with therapeutic (delayed) neck dissection (moderate certainty).

1 finding from 1 review

Superselective neck dissection vs Elective selective neck dissection

Disease-free survival · Adults with oral cavity cancer (tongue or floor of mouth) and clinically negative neck nodes
1 finding from 1 review

PET-CT following chemoradiotherapy (neck dissection only if no/incomplete response) vs Planned neck dissection before or after chemoradiotherapy

Total mortality · Adults with oral cavity or oropharyngeal cancer with nodal disease (stage N2 or N3)

PET-CT following chemoradiotherapy (neck dissection only if… showed no clear difference in total mortality compared with planned neck dissection before or after chemoradiotherapy (moderate certainty).

1 finding from 1 review

Elective radical (comprehensive) neck dissection vs Elective selective neck dissection

Adverse events associated with treatment · Adults with oral cavity cancer
1 finding from 1 review

Sentinel node biopsy (neck dissection only if biopsy positive) vs Elective neck dissection

Total mortality · Adults with oral cavity or oropharyngeal cancer

Sentinel node biopsy (neck dissection only if biopsy positive) showed no clear difference in total mortality compared with elective neck dissection (low certainty).

1 finding from 1 review