Carcinosarcoma of the upper urinary tract with an aggressive angiosarcoma component
José Luis Cuadra-Urteaga1, Albert Font1, Gustavo Tapia2
1a Medical Oncology Service, Institut Català d'Oncologia, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona.
Cancer Biology & Therapy
|February 19, 2016
Summary
Carcinosarcomas (CS) are rare biphasic tumors. This case highlights an aggressive upper urinary tract carcinosarcoma with an angiosarcoma component, leading to rapid metastasis and death.
Area of Science:
- Oncology
- Uropathology
Background:
- Carcinosarcomas (CS) are rare biphasic tumors featuring malignant epithelial and mesenchymal components.
- Upper urinary tract carcinosarcomas are exceptionally rare and carry a poor prognosis.
Observation:
- A 44-year-old man presented with a renal pelvis mass initially diagnosed as high-grade urothelial carcinoma.
- Post-surgery, the patient developed symptoms indicative of widespread metastasis, including lung nodules and a retroperitoneal mass.
- Biopsy confirmed high-grade angiosarcoma in the retroperitoneal mass, with microscopic angiosarcoma found in the original renal pelvis tumor.
Findings:
- The initial diagnosis was revised to carcinosarcoma of the renal pelvis with an angiosarcoma component.
- The patient experienced rapid disease progression, succumbing to respiratory failure eight weeks post-surgery.
- Autopsy revealed extensive angiosarcoma metastases throughout the retroperitoneum and multiple organs, with no residual urothelial carcinoma.
Implications:
- This is the first reported case of upper urinary tract carcinosarcoma with an angiosarcoma component exhibiting such an aggressive clinical course.
- The rapid onset of widespread angiosarcoma metastases underscores the aggressive nature of this rare tumor subtype.
- Further research into the clinical and molecular characteristics of carcinosarcomas is crucial for improved understanding and management.
