Teratomas are common tumors in children. The most common sites are gonads, however, several extragonadal sites are well known such as sacrococcygeal region, mediastinum, head and neck, stomach, and vagina. Occasionally, teratomas occur in unusual sites which pose diagnostic difficulties. Here, we describe two cases of infantile teratomas with unusual presentation. The first case was a 6-month-old girl who presented with a mass in the right side of the abdomen. Computed tomography (CT) scan showed a solid-cystic mass in the right suprarenal region. The second was a 4-month-old boy who came with a huge abdominal mass. Contrast-enhanced CT showed a tumor arising from the jejunal mesentery. On microscopic examination, they were diagnosed as mature and immature teratoma, respectively. Although neuroblastoma is the most common infantile adrenal neoplasm, the possibility of teratoma should be considered for cystic adrenal lesions. Mesenteric teratoma can be difficult to distinguish radiologically from the more common lymphangioma; however, accurate diagnosis is important in view of long-term follow-up for teratomas because of the possibility of malignant transformation.
Keywords: Adrenal teratoma; extragonadal teratomas; mesenteric teratoma.
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