The villus width was measured at the middle of the villi (Awad et al., 2011; Choe et al., 2012).The thickness of muscularis mucosae
(thin layer of smooth muscle)was measured from the base of the crypt to the base of the muscularis mucosae
Analysis of the Disposition of the Muscularis Mucosae
On the other hand, of the 97 tumors, there were 43 tubular adenomas (44.3%), 28 mucosal cancers (28.9%), 8 SM1 cancers (8.2%), 10 SM invasions 1000 ^m or more from the muscularis mucosae
(SM2) or deeper (10.3%), and 2 serrated or nonneoplastic lesions (2.1%) in group B.
These glands are permeated by collagen and smooth muscle fibers that are organized to form the muscularis mucosae
. The submucosa presents several collagen fibers, developed blood vessels, beyond the presence of numerous cells with acidophilic granules that have infiltrated into the epithelium (Figure 4B).
El tejido conectivo que sustenta al surco peneano y al glande se divide en un corion de tejido conectivo denso no modelado, limitado por una lamina muscularis mucosae
de poco desarrollo y una tunica submucosa que contiene tejido erectil formado por senos venosos.
Below these crypts and the lamina propria is a thin layer of smooth muscle cells called muscularis mucosae
, which forms the boundary between mucosa and submucosa and has a rich supply of lymphatic channels that form a lymphatic plexus.
(16) Histologically, they show unremarkable surface duodenal mucosa with a unilocular or multinodular cystic dilatation of the Brunner gland ducts immediately underneath the muscularis mucosae
. The cysts are lined by an undulating single layer of cytologically bland cuboidal or columnar epithelium with clear cytoplasm and basally located nuclei usually without cytologic atypia (Figure 2).
The histological and histochemical properties of the ureter in Japanese quail were generally similar to those of the domestic pigeon and European starling except for the presence of connective tissue fibers in the lamina propria and tunica submucosa, isometric longitudinal folds in lumen and scattered muscularis mucosae
in the ureter.
 The new WHO classification of urothelial carcinomas of the urinary bladder (1999) discriminate the minimally invasive papillary urothelial carcinomas in those with infiltration of the lamina propria above the muscularis mucosae
(pT1a), the infiltration of the lamina muscularis mucosae
(pT1b), and the extension beyond the muscularis mucosae
This is in contrast to other mesenchymal tumors like leiomyomas that involve the muscularis mucosae
. GISTs most frequently occur in the stomach (70%), followed by the small intestine (20-30%), anorectum (7%), colon, and esophagus.
The depth of submucosal invasion was classified as sm1 (penetration into the submucosal layer of <500 [micro]m from the muscularis mucosae
) or sm2 (penetration into the submucosal layer of >500 [micro]m from the muscularis mucosae
Pathological staging and microscopic examination revealed a high-grade (G3) nested variant TCC with a deep lamina propria involvement (T1b), without muscularis mucosae