Remind briefly the anatomy of the retroperitoneal (RP) space and the radiological signs that allow affirming theRPl origin of a tumor. Review the main etiologies of malignantRP masses at our institute and the CT imaging features.
TheRP masses are a various and heterogeneous group that includes tumors fromRP organs,
the primary RPtumors and metastasis. The imaging findings of mostRP tumors are nonspecific,
explaining the difficulties of diagnosis which is frequently delayed. CT scan plays an integral role in the characterization ofthese masses and in evaluation of their extent and involvment of adjacent structures.
It also guides the biopsy and judge the operability. However,
histological confirmation remains required...
Findings and procedure details
Radioanatomy: The retroperitoneum extends from the diaphragm superiorly to the pelvis inferiorly and is situated between the posterior parietal peritoneum anteriorly and the transversalis fascia posteriorly. It is divided into 3 fundamental components by the anterior and posterior renal fasciae: the anterior pararenal,
and the posterior para renal spaces. Fig. 1 The anterior pararenal space Fig. 2 This space is bounded by : ♦ Anteriorly,
the posterior parietal peritoneum. ♦...
MalignantRP neoplasms are a rare heterogeneous group which can arise from any tissue type present in the retroperitoneum.
CT imaging is the key to the study of retroperitoneal masses providing valuable information in identifying the extent of disease and,
plays an important role in the pre-operative staging and surgical planning of these lesions.
Bhargava Moshiri P,
Comprehensive review of the retroperitoneal anatomy,
and pattern of disease spread.
Curr Probl Diagn Radiol , September 2013 2.
Solid malignant retroperitoneal masses a pictorial review.
2013 oct 11. 3.
Imaging of uncommon retroperitoneal masses.