Risk of second malignancies among survivors of pediatric thyroid cancer

International Journal of Clinical Oncology
Marwan H AdlyWafaa M Rashed

Abstract

Thyroid carcinoma is a very rare tumor in the pediatric age group, accounting for only 1.5-3% of childhood carcinomas in the United States and Europe. We aimed to identify the risk of a second malignancy among pediatric thyroid cancer survivors. The cohort analysis consisted of pediatric cancer patients aged less than 20 years, diagnosed with a primary thyroid cancer, identified by site code ICD-0-3: C739, and reported to the SEER 9 database between 1973 and 2013. They were followed up until December 31, 2013; the end of the study period, or up to death if earlier. Out of 1769 patients diagnosed primarily with thyroid carcinoma, 42 patients had a total of 45 incidences of subsequent malignancies. The mean age of patients at the initial diagnosis of thyroid cancer was 16 years. Females (90.5%) had a significantly higher incidence of second malignancies (SM) than males (9.5%). The overall Standardized Incidence Ratio (SIR) of SM in the study patients was higher than expected (SIR = 1.48). Some specific sites showed significantly higher incidences: the salivary glands (SIR = 33.95), the gum and other parts of the mouth [excluding the lips, tongue, salivary glands and floor of the mouth] (SIR = 24.53)*** and the kidneys (SIR = 5.72...Continue Reading

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Citations

Jan 29, 2019·Journal of Pediatric Hematology/oncology·Naoki HiranoKenji Ihara
Oct 20, 2020·Current Opinion in Otolaryngology & Head and Neck Surgery·Peng YouDaniel C Chelius

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