Clinical Characteristics and Prognostic Factors of Small Intestine Angiosarcoma: a Retrospective Clinical Analysis of 66 Cases.

Background/aims: Primary angiosarcoma of the small intestine is a rare neoplasia, and there are limited data from systematic analyses. The aim of this study is to describe the clinical and pathological characteristics in addition to the prognostic factors for this rare neoplasia.

Methods: We retrospectively collected the clinical records and prognostic information of 66 patients with small intestine angiosarcoma reported between 1970 and 2017.