Results of resection of carotid body tumors with and without lymphnodes' dissection.

BACKGROUND

Carotid body tumor (CBT) is a slow-growing tumor arising from the carotid body, a chemoceptor organ lying behind the carotid artery bifurcation. Although rarely, metastases can occur distally through the hematogenous route and through the lymphatic route.to the cervical lymphnodes. The purpose of this study was to assess whether lymphnodes' resection should systematically be associated with the primary resection of a CBT.

METHODS

A retrospective analysis of 82 patients, 52 women of a mean age of 42 years undergoing resection of 88 CBT from 1994 to 2019. CBT were divided into 2 groups. Tumors in group A (n = 23, 26%) were treated by resection of the mass followed by a selective latero-cervical lymphadenectomy; tumors in group B (n = 65, 74%) underwent isolated resection of the mass. The study's primary endpoints were postoperative stroke/mortality rate, disease-specific survival and rate of local and distant recurrence of the disease.

RESULTS

Postoperative stroke-mortality rate was nil. One patient in group A (4.3%) presented a minor weakness of the contralateral arm, completely regressive within 12 h. One patient in group B (1.5%) died of liver and lung metastases 51 months after operation, no patient died of recurrent disease in group A (p = .62). No nodal recurrence was observed in group A, whereas one patient in group B (1.5%) presented nodal recurrence 39 months after primary tumor resection (p = .58) CONCLUSION: Selective lymphadenectomy associated with CBT resection does not increase the overall long-term survival and cannot be considered mandatory. It may help to better define the stage of the disease and to plan eventual adjuvant treatments.

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