Nodal yield, morbidity, and recurrence after central neck dissection for papillary thyroid carcinoma.
BACKGROUND
The role of central neck dissection (CND) in differentiated thyroid cancer remains controversial. This study aims at elucidating the potential benefits and drawbacks of CND associated to total thyroidectomy in papillary cancer.


METHODS
Protocols of patients undergoing total thyroidectomy and CND for papillary cancer were reviewed. The following data were recorded: macroscopic appearance of central nodes; nodes obtained at operation; number of metastatic nodes and parathyroid glands incidentally resected; metastases, age, completeness, invasiveness, size score; postoperative s-Ca; complications; and recurrences. Differences between therapeutic (gross nodal involvement) and prophylactic (no apparent node involvement) CNDs were studied.


RESULTS
Forty-three patients (mean age, 52 +/- 17 years) were studied. A mean of 8.4 +/- 6.6 nodes were resected per patient. A 60% prevalence (26/43) of presence of nodal involvement (N+) was found with no difference between low- and high-risk patients. Twenty-five (60%) patients developed transient hypocalcemia, which was associated with incidental parathyroidectomy, number of nodes resected, and thymectomy. Two patients (4.6%) developed permanent hypoparathyroidism and 3 (7%), transient vocal cord paralysis. Parathyroid glands were found in 19% of the specimens. At follow-up, there were no central neck recurrences, but 5 patients developed lateral recurrences despite treatment with I(131). All 5 patients had had therapeutic CND with 6 or more metastatic nodes obtained in the CND specimen. No lateral neck recurrences were observed after prophylactic CND or in patients with < 6 nodes involved.


CONCLUSIONS
CND prevents central neck recurrences. Morbidity of bilateral CND is significant, and its systematic implementation in the absence on gross nodal involvement requires reassessment.
Pereira
José A
JA
Department of Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
Jimeno
Jaime
J
Miquel
Joana
J
Iglesias
Mar
M
Munné
Asumpta
A
Sancho
Joan J
JJ
Sitges-Serra
Antonio
A
D000328:Adult; D002291:Carcinoma, Papillary / Q000473:pathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007011:Hypoparathyroidism / Q000209:etiology; D008297:Male; D008875:Middle Aged; D037981:Neck Dissection / Q000009:adverse effects*; D009364:Neoplasm Recurrence, Local / Q000517:prevention & control*; D012189:Retrospective Studies; D018570:Risk Assessment; D013964:Thyroid Neoplasms / Q000473:pathology / Q000601:surgery*; D013965:Thyroidectomy / Q000009:adverse effects*; D016896:Treatment Outcome; D014826:Vocal Cord Paralysis / Q000209:etiology