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02 January 2017 : Clinical Research

Analysis of Recurrent Sacrococcygeal Teratoma in Children: Clinical Features, Relapse Risks, and Anorectal Functional Sequelae

Yi Wang1ABCEF, Yeming Wu1ADE*, Lifeng Wang2CD, Xiaojun Yuan3AD, Mawei Jiang4D, Yuhua Li5D

DOI: 10.12659/MSM.900400

Med Sci Monit 2017; 23:17-23

Abstract

BACKGROUND: Sacrococcygeal teratoma (SCT) is a relatively uncommon tumor. Recurrence with poor survival and anorectal dysfunction are the 2 leading problems for patients. Here, we would review the clinic features of patients with SCTs in our hospital to identify risk factors of recurrent SCTs and to analyze anorectal functional sequelae.

MATERIAL AND METHODS: A retrospective review of all patients with SCTs in our center between 2007 and 2013 was performed. We analyzed the recorded data on each patient and performed follow-up through phone calls.

RESULTS: Our study included 105 inpatients (78 girls and 27 boys); 104 cases underwent surgical resection, and 62.5% cases had a mature histopathology. The proportion of malignant teratomas rose with increasing age. Fifteen children developed recurrent SCTs with a median of 11.5 months, and most of them had an elevation of AFP levels. Four recurrent children experienced a second tumor relapse. We observed a statistically significant difference in survival rate through Kaplan-Meier method between relapsed (66.7%) and non-relapsed (94.4%) patients. In univariate analysis, incomplete primary resection and malignant histology were proven to increase recurrence risks. Nearly half of patients had at least 1 of the parameters reflecting abnormal bowel function (e.g., involuntary bowel movements, fecal incontinence, and constipation). For those recurrent SCTs patients, difficulty defecating was a major problem.

CONCLUSIONS: Tumor recurrence affected the prognosis of children with SCT. In our research, incomplete resection and malignant histology were considered risk factors. Constipation was the main problem in anorectal functional sequelae for children who had recurrence.

Keywords: Pediatrics, Prognosis, Recurrence, Risk Factors, Sacrococcygeal Region, Teratoma

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750