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Purpose: Angiosarcoma (AS) is a rare malignancy with considerable heterogeneity seen in its aetiology, anatomical location, and clinicopathological behaviour. Diagnosis is often delayed and prognosis poor. The purpose of this study was to perform a retrospective review of all cases of AS over 10 years at a high-volume regional UK referral centre., Methods/patients: We reviewed all cases of AS discussed at the sarcoma multidisciplinary meetings of University Hospitals Birmingham NHS Foundation Trust from September 2013 to August 2023. Demographic and clinicopathologic features at diagnosis, approaches to treatment, and outcomes were compared between four AS subtypes., Results: A total of 130 cases were identified. The median age at diagnosis was 71 years, with the majority being female (78%). The most common AS subtype was radiation-induced AS (RIAS) (n = 72; 55%), followed by primary cutaneous (n = 28; 22%), primary non-cutaneous (n = 25; 19%), and AS secondary to lymphoedema (n = 5; 4%). Metastases were present at diagnosis in 18% of patients. Treatment was with surgery in the majority of patients (71%). The median survival for the cohort was 30 months (95% CI 20-40), although this differed significantly by AS subtype (p < 0.001), ranging from 5 months in primary non-cutaneous AS to 76 months in RIAS., Conclusion: RIAS is the most common AS subtype, with surgery the only potentially curative treatment modality. Overall prognosis varies significantly by subtype. An international consensus on classification of AS subtypes is required to allow meaningful comparisons across studies and/or a prospective multi-centre registry., Competing Interests: Declarations. Conflict of interest: The authors have no financial interest to declare in relation to the content of this article. Ethics approval: Not applicable. Informed consent: Individual informed consent was not required because of the retrospective design of the study., (© 2024. The Author(s), under exclusive licence to Federación de Sociedades Españolas de Oncología (FESEO).)

Background: Our study aimed to compare the comprehensive complication index (CCI) to the conventional Clavien-Dindo classification (CDC) in patients undergoing surgery for primary retroperitoneal sarcoma (RPS)., Methods: Data were collected for patients who underwent surgery from 2008 to 2019 at a tertiary institution. The length of hospital stay (LOS) was used as a surrogate marker for clinical outcomes, and associations with CDC and CCI were assessed., Results: Data were available for 191 patients, with the highest CDC Grade of I, II, III, and IV in 18.3%, 41.9%, 17.8%, and 4.2%, respectively; the 30-day postoperative mortality (CDC Grade V) was 1.6% (N = 3). Whilst both classification systems were significantly correlated with LOS, this association was significantly stronger for CCI (Spearman's ρ: 0.768 vs. 0.648, p < 0.001). Increasing Charlson Comorbidity Index, tumor size, and organ weighted resection scores were independently associated with longer LOS. However, the association between LOS and both the CDC and CCI remained significant, even after adjusting for these factors (both p < 0.001)., Conclusion: The CCI is more strongly associated with LOS than the CDC, and represents a useful tool to quantify the total burden of postoperative complications after surgery for RPS., (© 2021 Wiley Periodicals LLC.)