[Imaging and pathological features of gastrointestinal stromal tumors].

Objective: To investigate the imaging features and pathological manifestations of gastrointestinal stromal tumors (GISTs).

Methods: The imaging characteristics and pathological manifestations of 26 surgically treated patients with histologically confirmed GISTs were retrospectively analyzed.

Results: The tumors were found to originate from the small bowel (n=10), stomach (n=8), colon (n=6), mesentery (n=1) and omentum (n=1).

Retroperitoneal liposarcoma: MR characteristics and pathological correlative analysis.

Background: Liposarcoma is the most common primary retroperitoneal malignant neoplasm. However, preoperative diagnosis is a common problem due to lack of characteristic clinical presentations. It has been assumed that MRI, based on its high soft-tissue resolution, could discover and discern different subtypes of this tumor.