Helical CT Diagnosis of Primary Retroperitoneal Neoplasm / 实用放射学杂志

ABSTRACT

Objective To evaluate the helical CT diagnostic value of primary retroperitoneal neoplasm(PRN). Methods 32 cases of PRN confirmed by operation and pathology were retrospectively analyzed. Plain and enhanced CT scan were perfomed in 28 cases,and only 4 cases underwent plain CT scans. Results Of 32 cases,15 were benign tumor and 17 cases were malignant tumor.Among them ,16 cases were mesenchymal tissue-origin(11 cases were malignant neoplasm), 10 cases were nervous tissue-origin(3 cases were malignant neoplasm),3 cases were rudimental embryonal tissue-origin(all benign), and the source of unknown-origin were 3cases(all malignant neoplasm).To be correctly localized was 28 cases(87.5%) and correctly qualitative diagnosis of the tumor was 20 cases (62.5%) by CT before operation. Conclusion PRNs have many typies, helical CT provides informations in both position and characteristics before operation.