Clinical Report: Nutritional Status and Preoperative Anemia in Retroperitoneal Soft Tissue Sarcoma

Overview

This retrospective study analyzed 370 patients undergoing surgery for retroperitoneal soft tissue sarcoma (RPS) to assess changes in preoperative nutritional status and anemia over time. Findings revealed high rates of malnutrition and anemia, particularly in recurrent disease, with significant associations between nutritional parameters, surgical complexity, and postoperative outcomes.

Background

Retroperitoneal soft tissue sarcomas (RPS) are rare tumors comprising about 1% of adult malignancies, with high recurrence rates despite surgical resection. Complete tumor removal, often involving multivisceral resections (MVR), is the mainstay of treatment, especially for liposarcoma, the most common subtype. Extensive surgery can impact patients' nutritional status, but longitudinal changes in nutrition and anemia during disease progression and repeated surgeries have not been well studied. Understanding these changes is critical to optimize prehabilitation and improve postoperative outcomes.

Data Highlights

Key Findings

• High malnutrition rates (40–50%) were observed preoperatively in RPS patients, consistent with previous limited studies.
• Preoperative anemia was common, classified per WHO criteria, with varying severity across patients.
• Repeated surgeries and disease recurrence were associated with worsening nutritional parameters including albumin and hemoglobin levels.
• Multivisceral resections (MVR) significantly impacted nutritional status, correlating with lower albumin and hemoglobin preoperatively.
• Cumulative postoperative complication burden (measured by Comprehensive Complication Index) was linked to deteriorations in nutritional status.
• Lower preoperative albumin and hemoglobin levels were associated with longer hospital stays and higher complication rates.

Clinical Implications

Clinicians should closely monitor nutritional status and anemia in RPS patients, especially those undergoing multiple surgeries or extensive resections. Early identification of malnutrition and anemia may allow for targeted prehabilitation strategies to optimize patient condition before surgery, potentially improving postoperative outcomes and recovery. Multidisciplinary management including nutrition support is recommended.

Conclusion

This study highlights the dynamic deterioration of nutritional and anemia status in RPS patients over the disease course, emphasizing the need for proactive nutritional assessment and intervention. Tailored preoperative optimization may enhance surgical outcomes in this complex patient population.

References

1. University of Heidelberg Ethics Committee Approval S-649/2012
2. German Clinical Trials Register DRKS00034988