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<p>Undifferentiated pleomorphic sarcoma (UPS), a rare and highly heterogeneous malignant tumor, typically afflicts middle-aged to elderly male patients. Retroperitoneal UPS is exceptionally rare, characterized by slow growth and often lacking evident clinical symptoms. However, when symptomatic, the tumor manifests as a sizable mass. Surgical resection remains the primary treatment modality, albeit complex due to the intricacies of these cases. In this case report, we present a remarkable case of an 88-year-old patient with a retroperitoneal UPS initially misdiagnosed as an inguinal hernia. The tumor’s substantial growth prompted the patient to seek medical attention for abdominal distension. Following thorough imaging and pathological evaluation, a multidisciplinary surgical approach was executed, encompassing retroperitoneal tumor resection, ileus resection, partial cystectomy, and abdominal wall defect patch repair. The postoperative course demonstrated excellent recovery, and histopathological analysis confirmed the diagnosis. Subsequent 16-month follow-up revealed no tumor recurrence. Cases of giant retroperitoneal undifferentiated pleomorphic sarcoma occurring in patients of such advanced age have not been reported in clinical practice. Cases of retroperitoneal tumors growing towards the lateral abdominal wall and misdiagnosed as inguinal hernia are even rarer. Accurate and timely diagnosis through meticulous patient history assessment, standardized physical examinations, and comprehensive imaging is crucial for optimal patient outcomes, emphasizing the significance of prompt surgical intervention to enhance overall survival.</p>

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Giant Retroperitoneal Undifferentiated Pleomorphic Sarcoma Misdiagnosed as an Inguinal Hernia in an 88-Year-Old: A Case Report

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Hui Xu,
  • Aizhong Xu,
  • Mingyu Hu,
  • Xiaochao Zheng,
  • Baoping Liu,
  • Yaming Zhang

摘要

Undifferentiated pleomorphic sarcoma (UPS), a rare and highly heterogeneous malignant tumor, typically afflicts middle-aged to elderly male patients. Retroperitoneal UPS is exceptionally rare, characterized by slow growth and often lacking evident clinical symptoms. However, when symptomatic, the tumor manifests as a sizable mass. Surgical resection remains the primary treatment modality, albeit complex due to the intricacies of these cases. In this case report, we present a remarkable case of an 88-year-old patient with a retroperitoneal UPS initially misdiagnosed as an inguinal hernia. The tumor’s substantial growth prompted the patient to seek medical attention for abdominal distension. Following thorough imaging and pathological evaluation, a multidisciplinary surgical approach was executed, encompassing retroperitoneal tumor resection, ileus resection, partial cystectomy, and abdominal wall defect patch repair. The postoperative course demonstrated excellent recovery, and histopathological analysis confirmed the diagnosis. Subsequent 16-month follow-up revealed no tumor recurrence. Cases of giant retroperitoneal undifferentiated pleomorphic sarcoma occurring in patients of such advanced age have not been reported in clinical practice. Cases of retroperitoneal tumors growing towards the lateral abdominal wall and misdiagnosed as inguinal hernia are even rarer. Accurate and timely diagnosis through meticulous patient history assessment, standardized physical examinations, and comprehensive imaging is crucial for optimal patient outcomes, emphasizing the significance of prompt surgical intervention to enhance overall survival.