Malignant transformation and tumour recurrence in sacrococcygeal teratoma: a global, retrospective cohort study

作者：Lieke J. van Heurn, JPM Derikx, Nigel Hall, Jennifer H. Aldrink, MM Bailez, L. B. Chirdan, Shigehisa Fumino, Afua Hesse, Tutku Soyer, S StPeter, Jos W. R. Twisk, Tianyou Yang, Ernst L.W. van Heurn · 发表于：International Journal of Surgery · 年份：2024 · DOI：10.1097/js9.0000000000002045 · 被引用次数：13 · 研究领域：Teratomas and Epidermoid Cysts、Spinal Dysraphism and Malformations、Congenital Ear and Nasal Anomalies

INTRODUCTION: Sacrococcygeal teratoma (SCT) is a rare congenital tumour. The risk of malignancy and recurrence is not well defined. Previous studies are small and report differing conclusions about the timing of surgery and the duration of follow-up. The authors studied the risk of malignant transformation and SCT recurrence after surgery to address these gaps. METHODS: This was a global retrospective cohort study. Data of consecutive SCT patients was obtained from 145 institutes in 62 countries. Malignant transformation, defined as malignancy at initial resection, malignant recurrence or death due to malignancy, and its risk factors were analysed. RESULTS: Of the 3612 included patients, 3407 entered analysis. The risk of malignant transformation of the initial tumour was 3.3, 5.1, 10.1, and 32.9% at age 3 months, 6 months, 1 year, and 2 years, respectively. After 6 years, the censored risk of malignancy (64%) did not further increase. Recurrent SCT was diagnosed in 349 (10.2%) children with 126 (36.1%) malignant recurrences. Risk factors for recurrence were Altman type II [odds ratio (OR): 1.6, 95% confidence interval (CI): 1.2-2.2], Altman type III (OR: 1.6, 95% CI: 1.2-2.3), initial immature histology (OR: 1.9, 95% CI: 1.4-2.6), and initial malignant histology (OR: 4.0, 95% CI: 2.9-5.4). CONCLUSION: The risk of malignancy at initial resection in SCT increases with age reaching a plateau at 6 years of age. Recurrence after resection occurred in 10% of patients and 36% of th...