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Abstract Background Extra-abdominal desmoid tumor fibromatosis (DTF) is a rare, locally aggressive soft tissue tumour. The best treatment modality for this patient cohort is still object of debate. Questions/purpose This paper aimed to (1) to compare the outcomes of DTF after different treatment modalities, (2) to assess prognostic factors for recurrence following surgical excision, and (3) to assess prognostic factors for progression during observation. Methods This was a retrospective multicenter study under the patronage of the European Musculoskeletal Oncology Society (EMSOS). All seven centres involved were tertiary referral centres for soft tissue tumours. Baseline demographic data was collected for all patients as well as data on the diagnosis, tumour characteristics, clinical features, treatment modalities and whether they had any predisposing factors for DTF. Results Three hundred eighty-eight patients (240 female, 140 male) with a mean age of 37.6 (±18.8 SD, range: 3–85) were included in the study. Two hundred fifty-seven patients (66%) underwent surgical excision of ADF, 70 patients (18%) were observed without therapy, the residual patients had different conservative treatments. There were no significant differences in terms of tumour recurrence or progression between the different treatment groups. After surgical excision, younger age, recurrent disease and larger tumour size were risk factors for recurrence, while tumours around the shoulder girdle and painful lesions were at risk of progression in the observational group. Conclusion Local recurrence rate after surgery was similar to progression rates under observation. Hence, observation in DTF seems to be justified, considering surgery in case of dimensional progression in 2 consecutive controls (3 and 6 months) and in painful lesions, with particular attention to lesions around the shoulder girdle.

Chronic hepatitis C virus (HCV) infection is a global health problem, and about 10-30% of patients develop cirrhosis or hepatocellular carcinoma several years after being infected. In past decades, treatment of HCV infection was based on peginterferon and ribavirin, which lead to a sustained virologic response (SVR) in only 50-60% of patients. Since 2014, direct acting antiviral (DAA) agents have been available. Patients administered DAA agents usually reach SVR in 12 weeks. The aim of this study was to estimate the cost analysis of these innovative drugs while also taking into account the total health expenditure for managing HCV infection. The pharmaceutical and hospitalisation databases of the Local Health Unit (ULSS2) of Treviso were retrospectively analysed between 1997 and 2016 for each HCV patient. During this twenty-year period, people affected by HCV totalled 2,949; 277 of these patients were treated with DAA and, of these, only 2% did not reach SVR. The HCV genotype 1b was the most common, accounting for 58% of the total patients. The treatment for HCV genotype 3 was associated with higher costs. The expenses for the new treatments were found to be significantly higher compared to those for the old ones (i.e., peginterferon and ribavirin). The average costs for a cycle of therapy were €8,000 and €24,000 for interferon and DAA therapy, respectively. Total health care costs associated with HCV (excluding DAA treatments) for an individual HCV infection patient were estimated to be €32,000. Our results confirm the high efficacy of DAA therapy. Furthermore, these agents improve the clinical conditions and reduce both the treatment cost and health care in patients with HCV infection.