Diagnosis and management for synchronous multitumors of the gastrointestinal carcinoma and gastrointestinal stromal tumor        YE Ying-jiang, GAO Zhi-dong, WANG Shan. Department of Gastrointestinal Surgery, Peking University People’s Hospital, Beijing 100044, China
Corresponding author: WANG Shan, E-mail: shwang60@263.net.
Abstract    Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the gastrointestinal tract, accounting for 5% of all sarcoma in soft tissue. Retrospective studies showed 10%～30% of GISTs are completely asymptomatic at presentation, being found incidentally at surgery, radiographic imaging, endoscopy and even identified as chance findings at autopsy. Little is known about the actual incidence of incidental GIST with other gastrointestinal malignancy. The multitumors have been reported rarely. However, with the advances in understanding of GIST nature and inspection methods, the incidence rate may be underestimated.