A coexisting columnar cell
lesion was present on needle core biopsy in 36 of the 61 cases (59%).
Endometriosis, when present in the bladder, can exist as either a cystic lesion with a flat epithelial lining or glandular clusters with tall columnar cells
in the bladder wall.
The columnar cell
variant has since been recognized by the World Health Organization as a distinct entity under the subheading of "aggressive variants" of PTC.
1,2) It is important to keep in mind that in adenosis (BDA, columnar cell
change), the outer cell layer is easily identified and frequently hypertrophic.
Dirty necrosis, seen in 5 (100%) of 5 CRCa and 2 (18%) of 11 PCa cases, and the presence of columnar cells
with basal nuclei, seen in 5 (100%) of 5 CRCa and 1 (9%) of 11 PCa cases, appear to be the most useful morphologic parameters.
The ultrastructural analysis of the cilia with electronmicroscopy revealed ciliated cells appeared to be replaced by columnar cells
lacking cilia and basal bodies, and bearing on their surface cilium-like projections without any internal axonemal structure.
PCNA] (CT) = Number of labeled columnar cells
in relation to the total (unlabeled + labeled) columnar and basal cells.
The cervical canal is lined with another kind of cell called columnar cells
Moreover, in the exposed subjects we found a distinct increase in metaplastic squamous cells, partly associated with dysplasia, and in dysplastic columnar cells
The vascular channels were lined by plump columnar cells
with enlarged and irregular nuclei.
These luminal spaces were lined by atypical cuboidal to columnar cells
with abundant eosinophilic cytoplasm.
The epithelial component is usually represented by "fetal-appearing" keratinizing or nonkeratinizing squamous epithelium, neuroendocrine elements, and glandular structures lined with either cuboidal or columnar cells