Study of primary retroperitoneal masses. What I need to know?

Congress:

ECR 2013

Poster Number:

C-1316

Type:

Educational Exhibit

Keywords:

Neoplasia, Computer Applications-Detection, diagnosis, MR, CT, Oncology, Abdomen

Authors:

N. ROMERO FLOREZ, J. Soriano, L. Valls Masot, A. Maroto, M. Osorio, N. Cañete; Girona/ES

DOI:

10.1594/ecr2013/C-1316

DOI-Link:

https://dx.doi.org/10.1594/ecr2013/C-1316

Fig. 1: Nishino M, Hayakawa K, Minami M. Primary retroperitoneal neoplasm: CT and MR...

Fig. 2: Rajiah P, Sinha R, Cuevas C. Imaging of uncommon retroperitoneal masses....

Fig. 3: 35 years old man with multiple contusions after traffic accident, at emergency...

Fig. 8: 53 years old who presents abdominal pain with abnormal renal function proves. ...

Learning objectives

Recognize the primary retroperitoneal pathologies by computerized tomography (CT) and magnetic resonance (MR), identifying their morphological characteristics, location, organ of origin and characteristics after contrast material administration, making an appropriate differential diagnosis. Identify the retroperitoneal lesions and define origin, extension, allowing an adequate initial approach to patient management.

Background

The primary retroperitoneal pathologies are a challenge for the radiologist and clinician; their unspecific symptoms and low frequency are the principal reason. It is important to recognize the morphology, characteristics like size, shape, wall thickness, calcifications and the role of CT and MRI (ultrasound less frequent) in the correct study of these pathologies.

Imaging findings OR Procedure details

Localization of the lesions To make a correct localization of the lesions we should know the different spaces and limits, which compose the retroperitoneum. This anatomic space is delimited Fig. 2 superiorly by the diaphragm, lower limit: the pelvis, anterior : posterior parietal peritoneum and posterior by transversalis fascia. The retroperitoneum almost its divided in different areas: posterior pararenal space, anterior pararenal space, perirenal space and space of the great vessels. One of the challenges to radiologist its the correct localization of the retroperitoneal lesions...

Conclusion

Retroperitoneal lesions are a big challenge for both the clinician and the radiologist, many of retroperitoneal lesions may be difficult to filial origin, but following a few morphological and radiological signs of invasion or not of adjacent structures, can reach a correct diagnosis using techniques such as CT and MRI.

References

Neville A, Herts BR. CT characteristics of primary retroperitoneal neoplasms. Crit Rev Comput Tomogr 2004;45(4):247–270. S Negus. MRI of the retroperitoneal collections : a comparison with CT. The British Journal of Radiology, 73 (200 The British Journal of Radiology, 2000;73: 907-912.RadioGraphics,23,1133-1147. Rajiah P, Sinha R, Cuevas C. Imaging of uncommon retroperitoneal masses. Radiographics 2011: 31: 949-976 Titton R, Gervais D, Hahn P, Harisinghani M , Mueller P.Urine leaks and urinomas: diagnosis and imaging-guided intervention. Nishino M, Hayakawa K, Minami M,Yamamoto A, Ueda H, Takasu K....