XXXX : A case report.

@entity1 @entity548 @entity39 @entity5 @entity925 @entity44
UNASSIGNED: @entity44 ( @entity44 ) is a rare disease. RCITs manifest as solid and cystic masses. In pathological sections, cysts of various sizes, with internal @entity548 and @entity39 , are observed. Components of all germ layer tissue are also observed, the majority of which is located within the endoderm. As the @entity5 contains undifferentiated immature tissue components, RCITs are also termed malignant @entity44 . Immature @entity44 grow rapidly, often invading adjacent tissue to cause serious symptoms, and transfer through the blood and lymph vessels, often resulting in @entity5 . The present study reports the case of an @entity1 with @entity44 . The female @entity1 , aged six months and six days, was hospitalized due to an abdominal mass. Physical examination revealed a large mass (10*8 cm) below the xiphoid in the epigastrium. The mass, which ranged from the xiphoid to the umbilical region, was friable, and possessed a smooth surface, clear boundaries and poor activity, without @entity925 . Upper abdominal computed tomography (CT) revealed a large, solid, cystic mass in the left, middle and lower retroperitoneum. The @entity1 was admitted to the Yantai Yuhuangding Hospital for surgery. The pre-operative examination was improved following admission by documenting parameters that included the results from routine blood tests, @entity548 and clotting times and cardiography. Retroperitoneal @entity5 resection was then performed. During resection, the @entity5 was found to originate from the retroperitoneum. As the @entity5 involved the gastric wall, a section of the gastric wall was resected, in addition to the @entity5 . The resection surface was yellow and friable. Pathological examination of @entity5 tissue sections revealed the involvement of immature nerves and mesenchymal components, confirming the diagnosis of a grade II immature @entity44 . Subsequent to six months of outpatient follow-up, the @entity1 had recovered well, without recurrence. @entity44 is a clinically rare disease, and the present study adds to the current understanding of this rare condition in @entity1 .
