Genito-Urinary Tumors

Episode 7

Renal Lymphoma

• Incidence of renal involvement in patients with

lymphoma is 34-62% in several autopsy series.

• On CT, renal involvement in only 3-8% of all

patients

Renal Lymphoma

• Any age.

• Any sex.

• More in non–Hodgkin lymphoma than in Hodgkin

lymphoma.

Renal Lymphoma

• Primary: Rare (3%).

• Secondary: Hematogenous spread or direct

extension.

Renal Lymphoma

• Normal.

• Distortion of the collecting

system resulting from single or

multiple renal masses.

Plain X-Ray/ IVU:

Renal Lymphoma

• May appear normal because of the small size of the

renal nodules

• Single or multiple hypoechoic renal masses.

• Diffuse enlargement.

• Hydronephrosis may be seen because of compression of

the renal hilum.

• Perirenal hypoechoic halo is characteristic of perirenal

lymphoma

US:

Renal Lymphoma

US:

Renal Lymphoma

US:

Renal Lymphoma

US:

Renal Lymphoma

CT :

• Multiple renal masses.

• Solitary mass.

• Renal invasion from contiguous retroperitoneal disease.

• Perirenal disease.

• Diffuse renal infiltration.

Renal Lymphoma

CT :

• Multiple renal masses.

Renal Lymphoma

CT :

• Multiple renal masses.

Renal Lymphoma

CT :

• Multiple renal masses.

Renal Lymphoma

CT :

• Multiple renal masses.

Renal Lymphoma

CT :

• Solitary mass.

Renal Lymphoma

CT :

• Solitary mass.

Renal Lymphoma

CT :

• Solitary mass.

Renal Lymphoma

CT :

• Solitary mass.

Renal Lymphoma

CT :

• Renal invasion from

contiguous

retroperitoneal disease.

Renal Lymphoma

CT :

• Renal invasion from

contiguous

retroperitoneal disease.

Renal Lymphoma

CT :

• Renal invasion from

contiguous

retroperitoneal disease.

Renal Lymphoma

CT :

• Perirenal disease.

Renal Lymphoma

CT :

• Perirenal disease.

Renal Lymphoma

CT :

• Perirenal disease.

Renal Lymphoma

CT :

• Perirenal disease.

Renal Lymphoma

CT :

• Diffuse renal infiltration.

Renal Lymphoma

CT :

• Diffuse renal infiltration.

Renal Lymphoma

CT :

• Diffuse renal infiltration.

Renal Lymphoma

MRI :

• MRI findings in lymphoma are similar to those seen on

CT scans.

• Usually, lymphoma displays low signal intensity on T1-

weighted images, and it is either isointense or moderately

hyperintense on T2-weighted images.

• Lymphomatous tissue may be minimally enhancing, but

less than the normal renal parenchyma; therefore, it

remains hypointense relative to the kidney on contrast-

enhanced T1-weighted MRIs

Renal Lymphoma

MRI: