DOI: 10.36347/sjmcr.2023.v11i06.040

Pages: 1197-1199

Retroperitoneal immature cystic teratoma (RCIT) is a rare disease. RCITs manifest as solid cystic masses. In pathological sections, cysts of various sizes are observed, with internal hemorrhage and necrosis. Components of all germ layer tissues are also observed, the majority of which are located in the endoderm. Because the tumor contains immature, undifferentiated tissue components, RCITs are also known as malignant teratomas. Immature teratomas grow rapidly, often invading adjacent tissues to cause severe symptoms, and spread via blood and lymphatic vessels, often resulting in glandular cancer. We report the case of an infant with RCIT, aged three months, was hospitalized due to abdominal distension with collateral venous circulation. Physical examination revealed a large abdominopelvic mass, extending from the xiphoid to the umbilical region, with abdominal tenderness. Abdominal computed tomography (CT) revealed a large right retroperitoneal mass. The mass was heterogeneous, solid-cystic, with linear and nodular calcifications, associated with fatty flares in the center, and enhanced after injection of PDC. A retroperitoneal tumour resection was then performed. During resection, the tumour was found to originate from the retroperitoneum. Pathological examination confirmed the diagnosis of grade III secretory retroperitoneal immature teratoma.