Hematology and Oncology

Biography

Biography: Yuanchun Feng

Abstract

Abstract: Imaging manifestations of retroperitoneal tumors which come from different tissues lack specificity. Some of them have the same soft tissue composition, so they have the same attenuation.  In addition, most of the tumor are huge when they are discovered on clinic. The correct diagnosis is very difficult before resection. How to locate them clearly, how to determine the extent of tumor invasion, how to make qualitative diagnosis, and how to judge the tissue source of tumor?

Abdominal non- and enhancement CT scan provide sufficient retroperitoneal anatomical information for surgeons before operation.  The internal components of the tumor were identified according to the different attenuation shown on the image. The shape (round, oval, irregular, lobulated) and the size of the tumor, the relationship of the tumor and adjacent organs, and their interface (clear, fuzzy or halo sign) were observed on the images.

Abdominal CT examination can clearly locate whether the tumor is retroperitoneal or not, and show the special growth style and invasion behavior of the tumor.  Preoperative diagnosis of benign or malignant lesions, and assistant to chose surgical pathway, postoperative follow-up of therapeutic effects and recurrence of lesions.  Recently, we have attempted to explore the correlation between retroperitoneal tumors of different histological tissue origins and their common sites，retrospectively. The initial results are noteworthy. In the future, We will pay more attention to the CT localization function in the retroperitoneal tumors and try to find some common information which will help the diagnosis before operation. Therefore, MSCT is the first choice and main examination method for retroperitoneal tumors.