Abstract
Approximately two thirds of this study cohort displayed a sinonasal carcinoma extending across Ohngren's line at diagnosis.
Tumor extension across Ohngren's line at diagnosis is a negative prognostic factor for clinical outcome in accordance with AJCC 8th edition.
90% of tumors presenting with retropharyngeal lymph node metastasis were extended across Ohngren's line at diagnosis.
The presence of retropharyngeal lymph node metastasis is a strong negative prognosticator for survival in our study.
Retropharyngeal lymph node metastasis at diagnosis may be considered for inclusion in tumor staging for sinonasal carcinoma.
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