Preface -- Urinary bladder -- Basic anatomy and histology -- Inflammatory and tumor-like conditions -- Flat intraepithelial lesions and carcinoma in situ -- Benign papillary neoplasms and inverted papilloma -- Pathology of urothelial carcinoma -- Glandular neoplasms -- Pathology of the urachus -- Squamous cell neoplasms -- Neuroendocrine tumors -- Myofibroblastic proliferations and tumors -- Soft tissue tumors -- Other rare malignancies -- Metastatic and secondary tumors -- Pathology of the renal pelvis and ureter -- Pathology of the urethra -- Immunohistochemistry in urothelial lesions