1,721,152 research outputs found
Mesotelioma multicistico del peritoneo. Scattone A, Pennella A, Marinaccio M, Lonigro G, Ricco R, Pollice L, Serio G
No full textMorphological and morphometric characteristics and spermatogenic activity of the retained testis
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[Histological findings on the relation between elastosis and breast neoplasms and dysplasia].
No full textAbstract
Connective tissue changes with particular reference to elastosis in malignant and dysplastic breasts are studied. Hyperelastosis was closely associated with carcinoma particular with scirrhous type also in the perineoplastic area; on the contrary the percentage of the phenomena in benign displastic disease is significantly low. Elastosis was located around carcinomatous tissue, mammary neoplastic ducts and also around veins and as scattered foci in the stroma. The site of production of elastic fibers is discussed. Elastosis accompanying carcinoma is considered more than a simple association but its prognostic significance has not an absolute value
The histologic typing of tonsillar carcinoma.
No full textIn a retrospective review of 170 cases of malignancies of the tonsil the authors report on 81 malignant epithelial tumors. In 56 cases (69.1%), the tumor (squamous cell carcinoma) was composed of solid epithelial nests with different degrees of keratinization. In 24 cases (29.6%) the tumor (undifferentiated carcinoma of nasopharyngeal type) had histologic characteristics similar to the undifferentiated carcinomas observed in the nasopharynx. Only one case was unclassifiable. Squamous cell carcinomas occurred more frequently in males (6:1), in older age, with more frequent extratonsillar and nodal extension and a poorer prognosis. Undifferentiated carcinoma had a similar incidence in both sexes, occurred also at an early age, and more often seemed to be limited to the tonsil. The 10-year disease-free survival rate was 30% for undifferentiated carcinoma; all the patients affected by squamous cell carcinoma had a recurrence within 6 years of the diagnosis
Morphologic and classificatory considerations about 140 cases of carcinoma of the nasopharynx.
No full textThe morphologic aspects are reported for 140 cases of nasopharyngeal carcinoma collected from a retrospective review of malignant tumors of this region. Of 97 cases of undifferentiated carcinomas of nasopharyngeal type, 63 were composed of solid cords of epithelial cells (Régaud type), 22 showed isolated cells in a lymphoid stroma (Schmincke type), and in 12 the neoplastic cells were aligned with a fibrosarcoma-like aspect (spindle-cell type). The 36 cases of squamous cell carcinoma showed various degrees of differentiation. Of the remaining 7 cases, 3 were transitional cell carcinomas, 1 was an adenoid cystic carcinoma, and 3 were unclassifiable carcinomas. The undifferentiated carcinoma was present in all ages, with a male : female rate of 1.27 : 1. The squamous cell carcinomas were prevalent in males (3.5 : 1) and older patients. The 10-year survival rate was 30% in the group of patients with undifferentiated carcinoma, whereas patients with squamous cell carcinoma died within 4 years of the diagnosis
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