WebPathologic Considerations Three variants of adenomyoepithelioma have been described: the spindle cell variant, in which the proliferating myoepithelial cells are predominantly spindle cells; the tubular variant, which is composed of tubular lumi- nal epithelial cells surrounded by hyperplas- tic myoepithelial cells (Figs. 4C–4F); and the lobular … WebMyoepithelial hamartoma is a very rare submucosal tumor of the stomach. Magnus-Alsleben first described 5 cases of this tumor in 1903. ... bands surrounding diverse epithelial elements that can be arranged in different ways: as a simple glandular structure, BrunnerÕs gland, pancreatic ducts and occasionally pancreat-ic acinus.We report a case ...
Immunostaining patterns of myoepithelial cells in breast lesions: a …
Webadjective. myo· epi· the· li· al -ˌep-ə-ˈthē-lē-əl. : of, relating to, or being large contractile cells of epithelial origin which are located at the base of the secretory cells of various glands … WebDuctal, alveolar, and myoepithelial elements all undergo marked hyperplasia in preparation for lactation. Ductal proliferation is predominantly controlled by estrogen (E), whereas acinar differentiation is a progesterone (P) effect facilitated by estrogen. Progesterone secretion increases from 3–300 mg/day during pregnancy. mas minority caucus
Pleuromediastinal Epithelial-Myoepithelial Carcinomas American ...
WebAH have suggested a link between the 2. Our goal was to explore whether cases diagnosed on routine microscopy as AH harbored occult myoepithelial elements, which would be disclosed by an immunohistochemical evaluation. Twenty-nine such cases, derived from a teaching collection of one of the authors, formed the basis of the study. Clinical and … WebApr 11, 2024 · Myoepithelial neoplasms comprise a histologically and immunophenotypically diverse spectrum of entities. The following review is a comprehensive summa… WebThe myoepithelial cells frequently have clear cytoplasm and are readily shown immunohistochemically via positive staining for smooth muscle α-actin (Figs. 3C and 3D … masm invalid instruction operands