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World Journal of Surgery

, Volume 32, Issue 5, pp 747–753

First Online: 11 February 2008


BackgroundPapillary microcarcinoma PMC is increasing in incidence because of diagnosis by ultrasound-guided fine-needle aspiration cytology.

MethodsBetween January 1966 and December 1995, we treated 6019 patients with papillary cancer; among them, 2070 patients with PMC were studied.

ResultsPMC is essentially very similar to papillary cancer that is 11 mm or larger and has a very good prognosis. Smaller tumors and younger patients have a better prognosis. Among PMC, larger tumors 6–10 mm recur in 14% at 35 years compared with 3.3% in patients with smaller tumors. Patients older than 55 years have recurrence in 40% at 30 years, with a worse prognosis than younger patients who have a recurrence rate of less than 10%. Extracapsular invasion by the primary tumor also has a higher recurrence rate. The majority of recurrences are in the neck. Therefore, annual ultrasound of the neck is effective for recurrence surveillance.

ConclusionPapillary microcarcinoma is similar to larger papillary carcinomas with tumor characteristics and age-based recurrence rate that extends for many years, justifying long surveillance after surgery.

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Autor: Shiro Noguchi - Hiroto Yamashita - Shinya Uchino - Shin Watanabe


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