Histologic variants of infiltrating urothelial carcinoma
Carcinoma, Transitional Cell
Urothelial carcinoma displays many forms, and some of these variant morphologies may introduce diagnostic difficulties because of their similarity to other malignancies and/or benign lesions. Additionally, it is important to recognize variants that are associated with different outcomes from conventional urothelial carcinoma. For these reasons, familiarity with the diverse morphology of urothelial carcinoma is not simply an academic exercise but is important in providing quality care for patients affected by this disease.