Swallowing Function in Patients With Base of Tongue Cancers Treated With Primary Surgery and Reconstructed With a Modified Radial Forearm Free Flap
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Bibliographic record
Abstract
OBJECTIVE: To report swallowing outcomes and biomechanical properties of the base of the tongue (BOT) and the posterior pharyngeal wall (PPW) in patients who undergo surgical reconstruction with the beavertail modification of radial forearm free flap after primary resection of BOT cancer. DESIGN: Prospective cohort study with a 1-year minimum follow-up performed between October 1, 2001, and August 31, 2005. SETTING: Tertiary care facility. PATIENTS: Patients diagnosed as having primary carcinoma of the BOT were treated with primary surgical resection and reconstruction followed by radiotherapy. Inclusion criteria were collection of videofluoroscopic swallowing study (VFSS) data before and 1 year after surgery. Forty-one patients were treated during a 5-year period, and 20 were included in the final analysis. INTERVENTIONS: Reconstruction of BOT defects with the beavertail modification of radial forearm free flap followed by postoperative radiation. MAIN OUTCOME MEASURES: Aspiration score, pharyngeal residue score, and biomechanical analysis of BOT and PPW mobility were performed using images from VFSSs. Both the BOT and PPW positions were measured from 2 static bony landmarks. RESULTS: Of the 20 patients in the final analysis, 19 (95%) were able to swallow safely at 1 year. Mobility of the BOT after surgery was reduced in all postoperative VFSS data. Anteroposterior dimension or bulk of the BOT was preserved. No significant difference was found in PPW mobility. CONCLUSIONS: The beavertail modification of the radial forearm free flap is a good reconstructive option after BOT cancer extirpation. The procedure preserves the bulk of the BOT after cancer treatment and maintains adequate BOT-PPW apposition. This allows structures such as the pharyngeal, oral, and suprahyoid musculature to contract and generate the necessary force to propel the food bolus through the oropharynx, resulting in a safe swallow.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it