urothelial neoplasm definitiontransitional cell carcinoma definitionurothelial malignancymetastatic urothelial carcinomabronchogenic carcinoma definitionesophageal carcinoma treatmentpapillary carcinomaperitoneal carcinomabladder carcinoma treatmentanaplastic carcinomapulmonary carcinomametastatic hepatocellular carcinoma