Epidemiology of patients with musculoskeletal soft tissue sarcomas in a cancer hospital in Central China: A study of 1624 cases.

Abstract Background : To analyze the incidence characteristics of 1624 inpatients with soft tissue sarcoma (STS) during 2006 to 2016 in Henan Province Cancer Hospital in Central China. Methods : The information of electronic medical record from the first hospitalized patients with STS in Henan Province Cancer Hospital during January 1, 2006 to December 31, 2016 was collected, and descriptive statistics was analyzed on age, gender, pathological type and tumor location by using SPSS21.0 software. Results : There were 1624 inpatients with STS in Henan Province Cancer Hospital in 2006~2016.The top nine pathological subtypes of STS with high constituent ratio were undifferentiated pleomorphic sarcoma (UPS,23.83%),synovial sarcoma(16.69%), liposarcoma(13.67%), fibrosarcoma(10.22%), sarcoma without definite type (8.99%), leiomyosarcoma(7.02%), dermatofibrosarcoma protuberant (5.79%),rhabdomyosarcoma (4.68%) and malignant neurilemmoma(4.25%). The average age of inpatients was 44.71±17.91, and the inpatients aged 35-64 accounted for 56.34%.The number of UPS inpatients reached the peak at the age of 45 to 59; The median age of inpatients with rhabdomyosarcoma was 17 year.In total 1624 inpatients of STS, the number of male and female inpatients were 923 and 701, respectively. The gender ratio was 1.32:1. The proportion of UPS in either male or female inpatients was the highest, accounting for 23.07% and 24.82%, respectively. The number of male inpatients was more than that of female in the top nine pathological subtypes of STS except leiomyosarcoma (the gender ratio was 0.84:1). The most common initiation location of UPS, synovial sarcoma, liposarcoma was lower extremity, accounting for 51.16%, 53.13% and 52.25% in corresponding pathological type group, respectively. Dermatofibrosarcoma protuberant, rhabdomyosarcoma and fibrosarcoma were all mainly initiated in trunk, accounting for 72.34%, 47.83% and 45.57% , respectively. Leiomyosarcoma tend to occur in retroperitoneum. Conclusion : The top three pathological subtypes of STS with high constituent ratio were UPS, synovial sarcoma and liposarcoma.UPS should be paid more attention on the prevention, treatment and research in Henan province in future for its highest proportion of STS.