Malignant tumor of urinary bladder

A malignant tumor of the urinary bladder is a cancerous neoplasm that develops within the tissues of the urinary bladder, an organ of the genitourinary system responsible for storing urine Predominantly affecting older adults, it most commonly arises as urothelial carcinoma (transitional cell carcinoma) originating from the urothelium that lines the interior bladder wall, though less frequent histologies include squamous cell carcinoma and adenocarcinoma Pathophysiologically, these malignancies ...

A malignant tumor of the urinary bladder is a cancerous neoplasm that develops within the tissues of the urinary bladder, an organ of the genitourinary system responsible for storing urine

Predominantly affecting older adults, it most commonly arises as urothelial carcinoma (transitional cell carcinoma) originating from the urothelium that lines the interior bladder wall, though less frequent histologies include squamous cell carcinoma and adenocarcinoma

Pathophysiologically, these malignancies span a spectrum from non-muscle-invasive lesions confined to the mucosa and lamina propria to aggressive muscle-invasive and metastatic forms that penetrate the detrusor muscle and disseminate to regional lymph nodes or distant organs

Clinically, the disease most frequently manifests with painless gross or microscopic hematuria, accompanied in some cases by irritative lower urinary tract symptoms such as dysuria, urgency, or urinary frequency