Biomedical subjects

Maria Florescu

Publications and source records attributed to Maria Florescu.

4 recordsLinked to original sources

PubMed2005

Salivary gland Basal cell adenomas--immunohistochemical evaluation of four cases and review of the literature.

OBJECTIVE: Evaluate the antigen profile of cellular population from basal cell adenomas. MATERIAL AND METHODS: Histopathological and immunohistochemical evaluation of four-salivary gland basal cell adenomas; the pathological samples were provided by the Oral Maxilla Facial Surgery Department of the Clinical County Hospital from Craiova. RESULTS: All basal cell adenoma exhibit differentiation toward 3 cell phenotypes: ductal luminal, basal and myoepithelial. CONCLUSIONS: The antigen profile of these tumors closely regard with other variants of salivary gland adenomas, such as pleomorphic adenoma and myoepithelioma. So, we can conclude that these tumors had a common origin, most probably from intercalated ducts and the proportion of those 3 cellular types, their cytoarchitectural arrangements and the quantity of extracellular matrix production can do the differentiation between them.

Adenoma↗

PubMed2005

Histopathologic aspects of the limited endometrial hyperplasias--a study concerning 149 cases.

This study concerns 147 cases of limited endometrial hyperplasia, diagnosed at patients between IV, V, VI and VII decades of life. Histopathologically, the aspects were of basal hyperplasia--40 cases and polyp hyperplasia--107 cases. The polyp-like hyperplasia was present at pre and postmenopausal patients. At the premenopausal patients the polyps were hormonally active: glandular, glandular-cystic and adenomatous type polyps. In contrast, the majority of the postmenopausal patients presented hormonally inactive polyps, like cystic atrophic or fibrous polyps. Modifying the prognosis of lesions, we took in consideration the morphologic changes associated with these lesions, like epithelial metaplasia or nuclear atypia.

Adenoma↗

PubMed2005

Gingival angiosarcoma: histopathologic and immunohistochemical study.

Angiosarcomas of the head and neck are rare tumors, the intra-oral localization being considered exceptionally in the specialty literature. The diagnosis of this kind of tumor in gingival location is difficult, both to the rarity of this lesion at this site, and to the various histopathological aspects. We present the case of 70 years old male patient clinically diagnosed with tumor of the alveolar crest of mandible, which, histopathologically, associated areas of predominant vascular proliferation, with areas of carcinoma and sarcoma. Immunohistochemical, the tumor was investigated for antibodies which prove the origin of proliferating cells: CD31, AE1-AE3 and vimentin.

Antigens, CD↗

PubMedDate not supplied

The ultrastructural aspects of neoplastic myoepithelial cell in pleomorphic adenomas of salivary glands.

The purpose of this study has been to establish the major ultrastructural aspects of the myoepithelial cell and the myoepithelial-like cells proliferated in the pleomorphic adenomas of salivary glands. Thus, twelve benign pleomorphic adenomas of salivary glands have been studied by electron-microscopy transmission techniques. Our analysis has proved the proliferation of two major cellular populations, one of ductal type and one of myoepithelial type, which tried to reproduce the tubulo-acinar cytoarchitecture from the normal salivary glands. We have also noticed the key role of the so-called 'modified' myoepithelial cells from the periphery of the proliferating epithelial units in the genesis of the myxoid and chondromyxoid tumoral stromal areas. All these ultrastructural aspects have explained the great histological diversity of these salivary gland neoplasms as well as the key role of the myoepithelial cell in its histogenesis.

Adenoma, Pleomorphic↗