Oral Presentation - 8
Newborn Sacrococcygeal Teratoma: Consider Urologic Comorbidity
Gül Şalcı 1, Arbay Özden Çiftçi 1, Mehmet Emin Şenocak 1, Feridun Cahit Tanyel 1, İbrahim Karnak 1, Diclehan Orhan 2, Canan Akyüz 3, Saniye Ekinci 1
1 Hacettepe University Faculty of Medicine Department of Pediatric Surgery
2 Hacettepe University, Faculty of Medicine, Department of Pediatric Pathology
3 Hacettepe University, Faculty of Medicine, Department of Pediatric Oncology
Background purpose: Sacrococcygeal teratoma (SCT) is the most common congenital neoplasm in neonates. Pelvic mass effect and the need for aggressive surgical resection may lead urinary dysfunction. In this study long term results newborn SCT treatment is evaluated with special emphasis on urinary system comorbidities.Methods: Records of all neonates diagnosed with SCT between 2006 and 2016, were retrospectively reviewed. Data collected included patient characteristics, results of laboratory and imaging studies, surgical technique, early and late results. Results: Eleven girls and 3 boys with a mean age of 7 days (1-27 days) were diagnosed with newborn SCT. Prenatal diagnosis with ultrasonography (n=8) and magnetic resonance imaging (n=3) was made in 8 patients. Other 5 patients were diagnosed by visible mass on sacral region and postnatal ultrasonographic examination done for voiding disturbance. Mean aFP level was 99.227 ng/mL (387-499.233ng/mL) and 3 patients had high levels of bHCG. All patients but one had sacral excision of tumor in newborn period (mean age: 7 days). These patients were classified as Altman Type I-II. One patient with Altman type III tumor had tru-cut biopsy and chemotherapy before the excision of tumor with abdominosacral approach (age of operation: 8 months). All patients had total excision of tumor with negative surgical margins. Pathological examination revealed mature teratoma in 7 patients and immature teratoma (Grade I-III) in 7. Average follow up time was 64 months (1-106 months). Three patients have voiding dysfunction and hydronephrosis. One patient is on physical therapy for gait disturbance. Eventually all patients have normal levels of aFP and bHCG and none of the patients have fecal incontinence. One patient has urinary incontinence. Conclusion: SCT has an excellent prognosis in newborns. However, urologic comorbidities such as voiding dysfunction should be considered to preserve renal function in long term follow up.