Abstract
BackgroundDespite the guidelines recommending thyroid lobectomy, many papillary thyroid microcarcinoma (PTMC) patients still undergo total thyroidectomy. PTMC's optimal treatment remains unclear. We aimed to determine whether total thyroidectomy improves outcomes compared to less extensive surgery. MethodsWe analyzed 6064 PTMC adult patients from the Surveillance, Epidemiology, and End Results (SEER) database (2000–2019) who underwent either total thyroidectomy (n = 3652) or less extensive surgery (n = 2412). Endpoints were overall survival, cancer-specific survival, and recurrence. ResultsTotal thyroidectomy patients had a 5.2 % mortality rate versus 8.1 % with less extensive surgery. Recurrence occurred in 1 (0.03 %) total thyroidectomy patient compared to 24 (1.0 %) less extensive surgery patients (HR 0.07, p = 0.01). Median survival was 8.1 years for total thyroidectomy versus 8.8 years for less extensive surgery. Overall survival favored total thyroidectomy (p = 0.001) but cancer-specific survival did not differ. ConclusionAlthough total thyroidectomy may not improve cancer-specific survival, it lowers recurrence risk and confers an overall survival advantage for PTMC patients. These findings may help guide surgical decisions.
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