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Aggressive and frequent resection of recurrences in retroperitoneal sarcoma contributes to long-term survival

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Abstract

Purpose

Retroperitoneal sarcoma (RPS) is a rare tumor with a poor prognosis and is often undetected until it is significantly enlarged. While surgical resection remains the primary treatment, there is little research on its benefits, especially that concerning the reoperation of recurrent disease. This study investigated the impact of surgical procedures, especially reoperation of recurrent RPS, on prognosis.

Methods

This retrospective study included 51 patients who underwent radical resection surgery (R0 status) for primary or recurrent RPS without distant metastasis. Patient outcomes and prognosis were defined in terms of the clinicopathologic factors and surgical techniques performed.

Results

In all cases, the 5-year disease-free survival (DFS) rate was 28.2%, 5-year overall survival rate was 89.9%, and 5-year no residual liposarcoma rate was 54.3% after operation and re-reoperation. There was a statistically significant difference between the 5-year DFS rate and 5-year no residual liposarcoma rate due to frequent re-reoperation (p = 0.011). On univariate analysis of primary and recurrent lesions, the histological type and the number of organs involved were identified as statistically significant prognostic factors. Patients with well-differentiated liposarcomas had a statistically better prognosis than those with other cancer types (primary RPS, p = 0.028; recurrence, p = 0.024).

Conclusions

Aggressive and frequent resection of recurrent RPS with combined resection of adjacent organs contributes to long-term survival. The establishment of a surgical strategy for RPS will require a prospective study.

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Correspondence to Koji Komori.

Ethics declarations

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.

Ethical approval

This study was approved by the Ethics Committee of Aichi Cancer Center, Chikusa-ku Nagoya, Japan (2020-1-095).

Conflict of interest

The authors declare that they have no conflicts of interest.

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Supplementary information

Supplementary Material 1

A midline cutaneous incision is performed along with a transverse incision (PDF 916 kb)

Supplementary Material 2

The mechanism of unexpected massive bleeding during RPS resection (PDF 18 kb)

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Komori, K., Tsukushi, S., Yoshida, M. et al. Aggressive and frequent resection of recurrences in retroperitoneal sarcoma contributes to long-term survival. Langenbecks Arch Surg 406, 1635–1642 (2021). https://doi.org/10.1007/s00423-020-02062-z

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  • DOI: https://doi.org/10.1007/s00423-020-02062-z

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