CLINICAL IMAGAGINGAN ATLAS OF DIFFERENTIAL DAIGNOSISEISENBERG

1. 29Complex Renal Masses

2. CLINICAL IMAGAGING
AN ATLAS OF DIFFERENTIAL DAIGNOSIS
EISENBERG
DR. Muhammad Bin Zulfiqar
PGR-FCPS III SIMS/SHL

3. • Fig GU 29-1 Leukemic infiltration. Sagittal
sonogram of the kidney (K) shows multiple
complex masses with cystic and solid
components.27

4. • Fig GU 29-2 Renal cyst with a blood clot.
Sagittal sonogram of the kidney (K) shows that
the cyst (C) contains a blood clot (arrow).27

5. • Fig GU 29-3 Renal cyst with malignancy.
Enlarged sonogram demonstrates the solid
renal tumor (arrow) within the cyst.27

6. • Fig GU 29-4 Renal abscess. Sagittal sonogram
of the kidney (K) reveals a complex mass
(arrow) in the upper pole.27

7. • Fig GU 29-5 Renal abscess. Enlarged sonogram
of the kidney (K) shows an irregular mass
containing low-level echoes (arrow).27

8. • Fig GU 29-6 Renal abscess. Sagittal sonogram
of the kidney demonstrates a peripheral, high-
echogenic cluster of echoes (arrow)
representing gas formation in the abscess.27

9. • Fig GU 29-7 Hydronephrosis. (A) In a patient with
moderate disease, the dilated calyces and pelvis
appear as echo-free sacs (arrows) separated by
septa of compressed tissue and vessels. (B) In a
patient with severe hydronephrosis, the
intervening septa have disappeared, leaving a
large fluid-filled sac (H) with no evidence of
internal structure and no normal parenchyma
apparent at its margins.

10. • Fig GU 29-8 Pyonephrosis. Parasagittal sonogram of the
right kidney (RK) demonstrates marked hydronephrosis
and a characteristic fluid level (arrows). The fluid level
indicates sediments in the renal collecting system and
is a typical finding of pyonephrosis. (H, head; L, liver).2