Glossectomy for T2N0 Lateral Tongue Squamous Cell Carcinoma
For a 36-year-old man with T2 (2–4 cm) squamous cell carcinoma of the right lateral tongue and clinically N0 neck, the recommended surgical approach is partial glossectomy with ipsilateral selective neck dissection of at least levels I-III, with consideration for extending to level IV if postoperative radiation is not planned. 1, 2
Primary Tumor Resection: Partial Glossectomy
Partial glossectomy is the standard surgical approach for T2 oral tongue carcinoma, with the goal of achieving wide, tumor-free margins while preserving function 1
Adequate surgical margins are critical for local control—margins should be ≥1 cm when feasible, as close margins (<1 cm) are associated with higher local recurrence rates (15% versus 9% for adequate margins) 3
Reconstructive closure with local/regional flaps, free tissue transfer, or grafts should be performed at the surgeon's discretion, but never at the expense of obtaining tumor-free margins 1, 4
No gross residual disease should be left at the primary site, even if this requires sacrifice of adjacent structures 1
Elective Neck Dissection: Mandatory for T2 Disease
Rationale for Elective Treatment
The risk of occult cervical metastases in T2N0 oral tongue cancer is 32-41%, which mandates elective neck treatment 5, 6, 3
Occult metastases increase significantly with tumor size: T1 lesions have 6-28% occult disease, while T2 lesions have 34-36% occult disease 5, 7
Tumor thickness >10 mm is strongly associated with increased risk of nodal relapse (p=0.0004), further supporting elective neck dissection for T2 lesions 7
Extent of Neck Dissection
For oral cavity tumors with clinically N0 necks, selective neck dissection must include at least levels I-III on the ipsilateral (right) side 1, 2
Contemporary practice often extends dissection to levels I-IV when postoperative radiation is not planned, reflecting a more comprehensive but still selective approach 2
Levels IV and V involvement from T1-T2 oral tongue cancer is low (only 6% skip metastases to level III, with no skip metastases to levels IV or V in one series), so supraomohyoid neck dissection (levels I-III) may be sufficient unless intraoperative findings suggest extensive disease 5, 8
Laterality Considerations
For a unilateral right lateral tongue tumor that does NOT approach or cross the midline, ipsilateral (right-sided) selective neck dissection only is appropriate 2
Bilateral neck dissection is NOT indicated for this patient, as it is reserved for tumors at, approaching, or crossing the midline, or for base of tongue lesions with bilateral lymphatic drainage 1, 2
Contralateral submandibular dissection is only indicated when the primary tumor approximates or crosses the midline 1, 2
Postoperative Management Algorithm
If Pathology Shows No Adverse Features
- Observation is appropriate if margins are negative, no nodal involvement, and no other high-risk features 1
- Postoperative radiation is optional (category 2B) in this scenario 1
If Pathology Shows One Positive Node Without Adverse Features
- Re-excision should be considered 1
- Postoperative radiation may be considered depending on other risk factors 1
If Pathology Shows Adverse Features
Postoperative chemoradiation (preferred, category 1) is indicated for: 1
- Extracapsular spread
- Positive margins
- Multiple positive nodes (≥2 nodes)
Concurrent single-agent cisplatin at 100 mg/m² every 3 weeks × 3 doses is the recommended chemotherapy regimen 1, 9
Common Pitfalls to Avoid
Do not perform bilateral neck dissection for a unilateral lateral tongue tumor that does not approach the midline—this adds unnecessary morbidity without oncologic benefit 2
Do not omit elective neck dissection in T2 disease based on clinical N0 status alone—the 32-41% occult metastasis rate justifies prophylactic treatment 5, 6, 3
Do not compromise surgical margins to preserve function—functional reconstruction can be performed, but tumor-free margins are paramount 1, 4
Ensure adequate pathologic examination with proper specimen orientation to confirm all intended lymph node levels have been removed and evaluated 2
Level VI (central compartment) is NOT relevant for oral cavity tumors and should not be included in the dissection plan 2