Mixed epithelial and stromal tumor of the kidney

Case contributed by James Sheldon
Diagnosis certain

Presentation

Known Hodgkin's Lymphoma. Incidental finding on initial staging CT.

Patient Data

Age: 27 years
Gender: Male

Exophytic, heterogeneous right renal lesion is identified. There is cortical disruption and extension into the posterior pararenal space.

No lymphadenopathy within the abdomen or pelvis.

Heterogeneously hypoechoic 60mm lesion in the right kidney was biopsied.

Case Discussion

Histology revealed features consistent with Mixed epithelial and stromal tumor (MEST) of the kidney, which is an uncommon and recently recognized distinct neoplasm that should be distinguished from other renal neoplasms.

It is typically seen as a multiloculated cystic renal mass with a variable proportion of solid and cystic components and containing internal septa. The latter may demonstrate heterogeneous and delayed contrast material enhancement.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.