Non-muscle invasive bladder cancer with carcinoma in situ

Non-muscle invasive bladder cancer with carcinoma in situ refers to high-grade urothelial malignancy confined to the inner mucosal lining of the urinary bladder without invasion into the underlying detrusor muscle layer Unlike exophytic papillary lesions, carcinoma in situ appears pathologically as a flat, poorly differentiated lesion that carries a substantially elevated risk of disease recurrence and progression to muscle-invasive or metastatic disease It primarily affects older adults, presen...

Non-muscle invasive bladder cancer with carcinoma in situ refers to high-grade urothelial malignancy confined to the inner mucosal lining of the urinary bladder without invasion into the underlying detrusor muscle layer

Unlike exophytic papillary lesions, carcinoma in situ appears pathologically as a flat, poorly differentiated lesion that carries a substantially elevated risk of disease recurrence and progression to muscle-invasive or metastatic disease It primarily affects older adults, presenting either alone (primary Tis) or concurrently with papillary tumors, and commonly manifests with microscopic or gross hematuria and irritative lower urinary tract symptoms