Central neck dissection in differentiated thyroid cancer: technical notes
- PMID: 24711677
- PMCID: PMC3970229
Central neck dissection in differentiated thyroid cancer: technical notes
Abstract
Differentiated thyroid cancers may be associated with regional lymph node metastases in 20-50% of cases. The central compartment (VIupper VII levels) is considered to be the first echelon of nodal metastases in all differentiated thyroid carcinomas. The indication for central neck dissection is still debated especially in patients with cN0 disease. For some authors, central neck dissection is recommended for lymph nodes that are suspect preoperatively (either clinically or with ultrasound) and/or for lymph node metastases detected intra-operatively with a positive frozen section. In need of a better definition, we divided the dissection in four different areas to map localization of metastases. In this study, we present the rationale for central neck dissection in the management of differentiated thyroid carcinoma, providing some anatomical reflections on surgical technique, oncological considerations and analysis of complications. Central neck dissection may be limited to the compartments that describe a predictable territory of regional recurrences in order to reduce associated morbidities.
I tumori differenziati della tiroide possono essere associati a metastasi linfonodali regionali nel 20-50% dei casi. Il compartimento centrale (VI livello – VII livello superiore) è considerato la prima sede di metastasi linfonodali in tutti i carcinomi tiroidei differenziati. L'indicazione per la dissezione del centrale (CND) è ancora in discussione soprattutto in pazienti cN0. Per alcuni autori, la dissezione centrale è raccomandata solo in pazienti sospetti preoperatoriamente (clinicamente o alla ecografia) e/o per metastasi linfonodali rilevate intraoperativamente. Per una migliore definizione abbiamo diviso la dissezione in quattro diverse aree per mappare la localizzazione delle metastasi. In questo studio presentiamo il razionale per la dissezione centrale del collo in pazienti affetti da carcinoma differenziato della tiroide, fornendo alcune considerazioni anatomiche sulla tecnica chirurgica, considerazione oncologiche e l'analisi delle complicanze. La dissezione centrale del collo potrebbe essere limitata ai compartimenti che descrivono un'area prevedibile di recidive locali, al fine di ridurre la morbilità.
Keywords: Central neck dissection; Thyroid cancer.
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