Related Experiment Video
Updated: Jul 19, 2026
07:48
An Orthotopic Bladder Cancer Model for Gene Delivery Studies
Published on: December 1, 2013
Sarcomatoid carcinoma with osseous differentiation in the bladder
Luis F Arenas1, Dercilio A Fontes, Emilio M Pereira
1Portuguese Beneficent Hospital, Sao Paulo, SP, Brazil. luis64@ig.com.br
Summary
Bladder sarcomatoid carcinoma, a rare and aggressive cancer, can recur after initial treatment. This case highlights a rare variant with osseous elements requiring radical surgery.
Area of Science:
- Uro-oncology
- Pathology
Background:
- Bladder sarcomatoid carcinoma is a rare transitional cell carcinoma variant (0.3% of bladder tumors).
- It exhibits aggressive behavior and poor prognosis despite standard treatments.
- Nomenclature is disputed, with varied historical terms used.
Observation:
- An 81-year-old male initially presented with transitional cell carcinoma.
- Following transurethral resection and Bacillus Calmette-Guérin (BCG) therapy, a local recurrence was detected.
- Recurrence revealed sarcomatoid carcinoma with osseous elements.
Findings:
- The recurrent tumor demonstrated sarcomatoid carcinoma with osseous differentiation.
- Radical cystoprostatectomy was performed as the definitive treatment.
Implications:
- This case underscores the aggressive nature of bladder sarcomatoid carcinoma.
- The presence of osseous elements represents a rare histological finding.
- Aggressive surgical management may be necessary for localized recurrences.
