Unit 12 -Secondary Retroperitoneal Tumors

Mets may be located anywhere in the _____________.

Retroperitoneum

Mets can be ________ from previously resected tumors.

Recurrences

Frequent recurrences of ________ ____________.

Renal Carcinoma

What are the indications of seeding when involving mets?

• Ascitic fluid

• Retroperitoneal tumor

What should you evaluate when coming across mets?

• Paraaortic region

• Lymph node extension

• Evaluate liver for mets

What is this image showing?

Sandwich sign —> Lymphadopathy

Retroperitoneal fluid collections

• Urinoma

• Hemorrhage

• Abscess

• Ascites

Where might abscesses be seen?

Along or within muscle planes

Abscesses have ________ shapes

Irregular

What lies in the most dependent portion of the retroperitoneal space?

Abscess

What should you determine in relation to ascities?

Peritoneal vs retroperitoneal

What is retroperitoneal fibrosis?

Thick sheets of fibrous tissue in retroperitoneal space

What is another name for Retroperitoneal fibrosis?

Ormond’s disease

Retroperitoneal fibrosis has a _______ ________.

Unknown etiology

Retroperitoneal fibrosis is associated with:

• AAA

• Malignant process

• Crohn’s disease

Retroperitoneal fibrosis can encase the _____ & _____; causing _____________.

IVC & ureters; hydronephrosis

What is the US appearance of retroperitoneal fibrosis?

• Discrete mass of abnormal hypoechoic tissue

• Anterior & lateral to great vessels

• May mimic Lymphoma

  • Further testing to delineate if benign or malignant

• Evaluate kidneys for obstruction

What is this image showing?

Retroperitoneal fibrosis

What is this image showing?

Retroperitoneal fibrosis

What is this image showing?

Retroperitoneal fibrosis