transitional epithelium

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Related to Transitional cells: transitional cell carcinoma, Urothelial Carcinoma

epithelium

 [ep″ĭ-the´le-um] (pl. epithe´lia) (Gr.)
the cellular covering of internal and external surfaces of the body, including the lining of vessels and other small cavities. It consists of cells joined by small amounts of cementing substances. Epithelium is classified into types on the basis of the number of layers deep and the shape of the superficial cells.
ciliated epithelium epithelium bearing vibratile, hairlike processes (cilia) on its free surface.
columnar epithelium epithelium whose cells are of much greater height than width.
cuboidal epithelium epithelium whose cells are of approximately the same height and width, and appear square in transverse section.
germinal epithelium thickened peritoneal epithelium covering the gonad from earliest development; formerly thought to give rise to germ cells.
glandular epithelium that composed of secreting cells.
pigmentary epithelium (pigmented epithelium) that made of cells containing granules of pigment.
sense epithelium (sensory epithelium) neuroepithelium (def. 1).
simple epithelium that composed of a single layer of cells.
squamous epithelium that composed of flattened platelike cells.
stratified epithelium epithelium made up of cells arranged in layers.
transitional epithelium a type characteristically found lining hollow organs, such as the urinary bladder, that are subject to great mechanical change due to contraction and distention; originally thought to represent a transition between stratified squamous and columnar epithelium.

tran·si·tion·al ep·i·the·li·um

highly discernible stratified epithelium with large, polyploid superficial cells that are dome shaped when relaxed but broad and flattened when distended; occurs in the calyces of the kidney, and in the ureter and bladder.

tran·si·tion·al ep·i·the·li·um

(tran-zish'ŭn-ăl ep'i-thē'lē-ŭm)
A highly distensible pseudostratified epithelium with large polyploid superficial cells that are cuboidal in the relaxed state but broad and squamous in the distended state; occurs in the kidney, ureter, and bladder.
References in periodicals archive ?
Comparison of five histopathologic methods to assess cellular proliferation in transitional cell carcinoma of the urinary bladder.
Incidence of apoptosis, cell proliferation and bcl-2 expression in transitional cell carcinoma of the bladder: association with tumor progression.
Expression and prognostic value of proliferating cell nuclear antigen in transitional cell carcinoma of the urinary bladder.
c jun oncogene expression in transitional cell carcinoma of the urinary bladder.
Clinical implications of the expression of epidermal growth factor receptors in human transitional cell carcinoma.
Molecular and immunohistochemical evaluation of epidermal growth factor receptor and c-erb-B-2 gene product in transitional cell carcinomas of the urinary bladder: a study in Greek patients.
Expression of c-erbB-2 oncoprotein in transitional cell bladder cancer.
Neo-adjuvant (pre-emotive) cisplatin therapy in invasive transitional cell carcinoma of the bladder.
Crissman et al., "Maintainance bacillus Calmette-Guerin immunitherapy for recurrent Ta, T1 and carcinoma in situ transitional cell carcinoma of the bladder:a randomized Southwest Oncology Group Study," Journal of Urology, vol.

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