1. Case 7

2. Basic clinical data 78-year-old Caucassian male
Tumor of the right ureter and renal pelvis
No evidence of metastatic disease or another primary tumor
No hormonal dysbalance

3. Your opinions, questions?

4. Common anoli Anolis carolinensis

5. Osteoclast-like giant cell tumor of renal pelvis
Akhtar M, Aslam M, Lindstedt E, et al
J Urol Pathol, 11, 1999:

6. Modern Pathol 2005 Advance On-line
Osteoclast-rich undifferentiated carcinomas of the urinary tract Baydar D, Amin MB, Epstein JI
Modern Pathol 2005
Advance On-line

7. Pathological features
No obvious malignant component within tumorous mass
Probably favourable biological behavior
Several similar cases were described but in connection with malignant urothelial component

8. Differential diagnostics
Sarcomatoid RCC or TCC
Primary osteosarcoma of the urinary bladder
Variants of urothelial carcinoma with HCG pozitive elements, with giant multinuclear cells, etc.

9. Sarcomatoid TCC

10. Osteoclast-type giant cells within TCC

11. TCC with trophoblastic differentiation

12. Giant cell ca/undifferentiated carcinoma