Primary retroperitoneal carcinosarcoma in a child: a case report

Area of Science:

• Oncology
• Pediatric Surgery
• Pathology

Background:

• Carcinosarcoma, a rare biphasic malignancy, comprises both epithelial and mesenchymal components.
• This tumor type is exceedingly uncommon in pediatric populations.
• Primary retroperitoneal carcinosarcoma in children is particularly underreported in medical literature.

Observation:

• A 7-year-old patient presented with a retroperitoneal carcinosarcoma.
• The tumor was completely surgically removed.
• No evidence of tumor recurrence was observed 11 months post-operation.

Findings:

• The case represents one of the few documented instances of primary retroperitoneal carcinosarcoma in a child.
• Detailed clinical, surgical, pathological, and immunohistochemical analyses were performed.
• Successful total resection achieved a favorable short-term outcome.

Implications:

• This case contributes valuable data to the limited understanding of pediatric retroperitoneal carcinosarcoma.
• It underscores the importance of complete surgical resection for potentially curative treatment.
• Further investigation into the characteristics and management of this rare pediatric malignancy is warranted.