This tumor shows a remarkable papillary architecture, arising from the surface epithelium
and in general showing indolent biologic behavior.
For many decades it was assumed that HGSCs arise from the ovarian surface epithelium
, but in 2001 this line of thinking was challenged by the identification of presumptive HGSC precursors--that is, serous tubal intraepithelial carcinomas (STICs), and occult HGSCs in the fallopian tubes of patients with germline BRCA1 mutations who were undergoing prophylactic surgery.
9] The World Health Organization histological classification of ovarian tumours separates ovarian neoplasms according to the most probable tissue of origin: surface epithelium
(65%), germ cells (15%), sex-cord stromal tissue (10%), miscellaneous (5%) and tumours of metastatic origin (10%).
Mucosa was characterized by the reduced height of surface epithelium
, flattened epitheliocytes in both surface and foveolar epithelium with nuclei displacement in central parts of the cells, and preservation of clear cell boundaries.
During this episode, the surface epithelium
transformes into one-layer columnar epithelium (16-18).
And rather than esophagitis due to GERD being a top-down process, from surface epithelium
to submucosa, multiple lines of evidence now suggest it is a bottom-up phenomenon sparked by activation of a hypoxia-inducible factor that occurs when esophageal epithelium is exposed to acidic bile salts, Rhonda Souza, MD, said at the meeting sponsored by the American Gastroenterological Association.
E-cadherin immunostaining was positive in the tumor cells, as well as in the surface epithelium
, but not in the connective tissue.
Thus, the same was observed even in reverse smokers where the palatal surface epithelium
of different persons react to reverse smoking variously.
The surface epithelium
is supported by a fibrous connective tissue layer, the lamina propria.
In the present research we will analyze the dynamics of functional activity (cytometric characteristics) of glandular and surface epithelium
of the uterine horns in cows with infertility due to ovarian sclerosis.
1,3) Infection with avian poxvirus usually occurs by transmission of the virus through compromised surface epithelium
by direct contact with infected birds or mechanically, by insect vectors or contaminated objects.
The surface epithelium
and the cells lining the tips and crypts of the glands of gizzard showed moderate positive reactions for both PAS (Fig.