These neoplasms are lined by urothelium, unlike the cuboidal
or columnar single cell lining the papillae in nephrogenic metaplasia, and are usually not difficult to distinguish from NA.
The epithelial cells are cuboidal
to tall and columnar in type, with uniform nuclei and inconspicuous nucleoli (figure 2).
On histopathological examination there is well demarcated unilocular cyst lined by double layer of cuboidal
cells which suggests eccrine hidrocystoma.
1) Papillary RCC is separated into a type 1 histologic variant, which features papillae lined by a 1- to 2-cell layer of cuboidal
cells with scant cytoplasm, and a type 2 histologic variant, which displays papillae covered by a pseudostratified layer of large eosinophilic cells.
Although their cause has not been clearly determined, they are known to be retention cysts that are lined with columnar or cuboidal
Histopathologically hidradenoma is composed of epithelial lobules within the dermis, showing tubular lumina lined by cuboidal
or columnar cells with cystic spaces that contain faintly eosinophilic material.
The primary tumor in that case was a moderately differentiated breast adenocarcinoma, composed of predominantly cuboidal
cells with scant cytoplasm, growing in ill-formed glands.
The lining epithelia were identified as either pseudostratified, stratified squamous, or simple cuboidal
Microscopic examination revealed that the cyst wall was lined with low cuboidal
epithelium at places and pseudostratified columnar epithelium at other places.
, and columnar cells may also be present.
We found that (1) in most cases, the types of epithelium were generally the same in both areas--pseudostratified cylindrical ciliated epithelium with goblet cells (respiratory epithelium), stratified cuboidal
epithelium, and stratified squamous nonkeratinized epithelium; (2) the APINC had more respiratory epithelium than the APS; (3) the APS had more squamous epithelium than the APINC; (4) the basement membrane of the APINC was thicker than that of the APS; (5) moderate chronic inflammatory infiltrate was more common in the APINc, and mild infiltrate was more common in the APS; and (6) the APINC had more mucous glands and the APS had more serous glands.
FROZEN SECTION: Left ovary frozen section showed fragments of ovarian stroma and a cyst wall lined by cuboidal
to pseudo-stratified columnar epithelium while H&E sections showed only ovarian stroma.