Sacrococcygeal teratoma in a female newborn with clinical features of trisomy 13: a case report from Central Africa.

INTRODUCTION: The objective of this report is to describe the first patient presenting clinical features of trisomy 13 in association with a sacrococcygeal teratoma. CASE PRESENTATION: We present the case of a Congolese female infant born with bilateral cleft lip and palate, hypotelorism, microcephaly, and capillary hemangioma on her face. She presented with a large sacrococcygeal mass (15.0 cm ×12.0 cm ×5.0 cm) with a cystic consistency and a positive transillumination. CONCLUSION: This observation suggests that overexpression of certain genes on chromosome 13 may lead to tumor formation from remnant cells of Hensen's node.