“…These include both malignant and benign tumors, such as cystic mesothelioma, teratoma, undifferentiated sarcoma, cystic metastases (especially from ovarian or gastric primaries), cysts of urothelial and foregut origin, benign tumors such as lymphangioma, and other tumors such as retroperitoneal hematoma, abscesses, duplication cysts, ovarian cysts [6]. Computed tomography scan is ideal for assessing retroperitoneal cysts because it provides discrete sectional images of the organs and retroperitoneal compartments, and in some cases, familiarity with the most relevant radiographic features, in combination with clinical information, allows adequate lesion characterization [7].…”