Incidental thyroid papillary microcarcinoma on 1777 surgically treated patients for benign thyroid disease: A monoinstitutional experience and literature review

Gaia Peluso, Stefania Masone, Silvia Campanile, Carmen Criscitiello, Concetta Dodaro, Armando Calogero, Paola Incollingo, Gianluca Minieri, Marsela Menkulazi, Alessandro Scotti, Vincenzo Tammaro, Ali Akbar Jamshidi, Luigi Pelosio, Marcello Caggiano, Nicola Carlomagno, Michele L. Santangelo

Research output: Contribution to journalArticle

Abstract

Background: We evaluated the frequency of incidental papillary thyroid microcarcinomas (mPTC) in thyroidectomies performed for benign diseases, to better characterize this nosologic entity and to assess the best treatment. Methods: Between 2009 and 2017, a total of 1777 patients underwent surgery for benign thyroid disease. Patients with preoperative undetermined or positive for malignancy cytology were excluded, as well as incidental thyroid cancer larger than 1 cm. Results: Total thyroidectomy was performed in 1649 patients (92.7%) and hemithyroidectomy in 128 (7.2%). Papillary thyroid cancer, sized between 2–10 mm, was found in 89 patients (5%), which were all by definition microcarcinomas (mPTC). In 11 patients mPTCs were multifocal and in 7 bilateral. Just 6 patients received hemithyroidectomy and later underwent radical surgery without complications. No tumor-related morbidity or mortality was observed. The χ2 test showed a statistically significant association between mPTC and non-toxic multinodular goiter. Discussion: In the literature, the rates of incidental mPTC vary, due to various factors such as histopathological examination and sampling numbers. Regarding surgical treatment, some authors support a “conservative” approach for the positive prognosis, but considering that it can be associated with mortality, lymph node recurrence and metastasis, its treatment is still controversial. Conclusions: Our experience confirms that total thyroidectomy in multinodular goiter is a safe procedure, which ensures endocrine control and oncologic complete tumor resection, in case of mPTC. In uninodular goiter, we recommend hemithyroidectomy; if mPTC is discovered, we suggest radical surgery especially in patients older than 50 years and with familial disposition for thyroid cancer and peripheral tumors larger than 5 mm and aggressive variants.

Original languageEnglish
JournalMemo - Magazine of European Medical Oncology
DOIs
Publication statusAccepted/In press - Jan 1 2020

Keywords

  • Hemithyroidectomy
  • Incidental carcinoma
  • Microcarcinoma
  • Thyroid
  • Total thyroidectomy

ASJC Scopus subject areas

  • Hematology
  • Oncology

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    Peluso, G., Masone, S., Campanile, S., Criscitiello, C., Dodaro, C., Calogero, A., Incollingo, P., Minieri, G., Menkulazi, M., Scotti, A., Tammaro, V., Jamshidi, A. A., Pelosio, L., Caggiano, M., Carlomagno, N., & Santangelo, M. L. (Accepted/In press). Incidental thyroid papillary microcarcinoma on 1777 surgically treated patients for benign thyroid disease: A monoinstitutional experience and literature review. Memo - Magazine of European Medical Oncology. https://doi.org/10.1007/s12254-019-00567-y