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J Korean Surg Soc. 2012 Nov;83(5):259-266. English. Original Article.
Cho JS , Yoon JH , Park MH , Shin SH , Jegal YJ , Lee JS , Kim HK .
Department of Surgery, Chonnam National University College of Medicine, Gwangju, Korea.
Department of Pathology, Chonnam National University College of Medicine, Gwangju, Korea.
Department of Internal Medicine, Chonnam National University College of Medicine, Gwangju, Korea.

PURPOSE: We investigated the prognosis according to age in papillary thyroid carcinoma (PTC) patients. METHODS: We retrospectively evaluated 2,890 patients who underwent thyroidectomy due to PTC between May 2004 and Aug 2008. We divided patients into 3 groups: young (< or =35 years old), middle (between 35 and 54 years old), and old (> or =55 years old). RESULTS: Median age was 47.0 years old (range, 15 to 82 years). Within a follow-up period median of 50 months, there were 148 (5.1%) locoregional recurrences, 6 (0.2%) PTC-related deaths, and 18 (0.6%) PTC-unrelated deaths. Outcomes were more favorable in the young group, with no PTC-related death despite the frequent locoregional recurrence. In the old group compared to the middle, there was a higher proportion of male, and more aggressive types as T3 or N1b, higher mean tumor number, more multiplicity, and bilaterality. The old group of > or =55 years did not show a significant difference in PTC-related deaths than other age groups in Cox analysis (OR, 0.9; P = 0.677), but a significant cutoff age in PTC-related deaths at 62.5 years was determined in ROC analysis (area under curve = 0.912). CONCLUSION: We showed that the < or =35 years group shows favorable prognosis despite the frequent locoregional recurrence and > or =62.5 years group shows a poor prognosis regardless of other factors such as male sex or tumor aggressiveness. Further multiinstitutional studies are needed to elucidate the prognosis according to patient's age.

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