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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XIV | Pages 2 - 2
1 Apr 2012
Daolio P Mapelli S Zorzi R Bastoni S Casanova M Meazza C Miceli R Mariani L Massimino M Ferrari A
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Early diagnosis is assumed to improve patient survival, but whether symptom interval (SI i.e. the period between the onset of the first symptoms signs of the disease and its definitive diagnosis) has significant impact on outcome or not remain unclear.

Methods

In a series of 575 patients < 21 years of age with soft tissue sarcomas (STS) we investigated the association patterns between SI patient/tumour characteristics or disease outcome. The analysis was based on multivariate models (linear for association's patient/tumour characteristics and Cox's for survival).

Results

The SI ranged between one week and 60 months (median 2 months) and tended to be longer the older the patient (i.e. the interval was longer in adolescents than in children) and the larger tumour's size and for tumours located at the extremities and for “non rhabmomio sarcoma” STS (as opposed to rhabmomio sarcomas). A longer SI unfavourably influenced survival (p=0.002): for SI of 1, 12 and 24 months, the 5-year survival for rhabmomio sarcoma was 65%, 46% and 19% respectively. A different pattern of association between SI and survival emerged for different types of STS histology.