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Research paper thumbnail of Validation of the pathological classification of lymph node metastasis for head and neck tumors according to the 8th edition of the TNM Classification of Malignant Tumors

Oral oncology, Jul 1, 2017

One of the main changes in the 8th edition of the TNM Classification for head and neck tumors is ... more One of the main changes in the 8th edition of the TNM Classification for head and neck tumors is the inclusion of extracapsular spread (ECS) as a criterion for evaluating the regional extension, both clinical (cN) and pathological (pN). The objective of our study is to evaluate the prognostic capacity derived from the inclusion of the ECS in the pathological classification of head and neck squamous cell carcinoma (HNSCC) patients treated with a neck dissection, as established by the 8th edition TNM Classification. Retrospective study of 1188 patients with HNSCC treated with a neck dissection between1990 and 2013. There were lymph node metastasis in 50.1% of the neck dissections. The pathological record revealed ECS in 50.5% of the positive neck dissections. The implementation of the changes of the 8th edition TNM classification produced the upstaging of 20.9% of the patients classified as pN1 with the 7th edition TNM classification to pN2a¸ and the upstaging of 58.4% of the patients...

Research paper thumbnail of Validation of the pathological classification of lymph node metastasis for head and neck tumors according to the 8th edition of the TNM Classification of Malignant Tumors

Oral oncology, Jul 1, 2017

One of the main changes in the 8th edition of the TNM Classification for head and neck tumors is ... more One of the main changes in the 8th edition of the TNM Classification for head and neck tumors is the inclusion of extracapsular spread (ECS) as a criterion for evaluating the regional extension, both clinical (cN) and pathological (pN). The objective of our study is to evaluate the prognostic capacity derived from the inclusion of the ECS in the pathological classification of head and neck squamous cell carcinoma (HNSCC) patients treated with a neck dissection, as established by the 8th edition TNM Classification. Retrospective study of 1188 patients with HNSCC treated with a neck dissection between1990 and 2013. There were lymph node metastasis in 50.1% of the neck dissections. The pathological record revealed ECS in 50.5% of the positive neck dissections. The implementation of the changes of the 8th edition TNM classification produced the upstaging of 20.9% of the patients classified as pN1 with the 7th edition TNM classification to pN2a¸ and the upstaging of 58.4% of the patients...

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