Reactional squamous hyperplasia of the foreskin.

Purpose: Cervical lymph node status is a widely accepted important prognostic parameter in laryngeal carcinoma.

Patients And Methods: In this study, we retrospectively reviewed neck specimens of 46 laryngeal carcinoma patients operated in our clinic. Presence of neck metastasis and pattern of reactivity in nonmetastatic nodes was correlated with recurrence and survival during a follow-up period of at least 2 years.

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Experimental chronic obstructive lung disease. I. Bronchopulmonary changes induced in rabbits by prolonged exposure to formaldehyde.

Morphol Embryol (Bucur)

November 1978

J Ionescu D Marinescu V Tapu A Eskenasy

The prolonged exposure to formaldehyde induces in the rabbit lung reactional and dystrophic changes involving the intrapulmonary bronchi, the bronchioli and the lung tissue. These changes are represented by bronchial cell hyperplasia with hypermucigenesis, extrusion of bronchial cells, bronchiolar hypermucigenesis, parcellary squamous metaplasia or necrobiosis of epithelia, thickening of bronchial and bronchiolar walls by subepithelial cell accumulations, destruction of musculo-elastic structures with stenosis or ectasia; the vascular reactions are hyperhaemic and proliferative with an obstructive and fibrous tendency; the parenchymal lesions are atelectasias, intralobular emphysema, and cellular thickening of alveolar walls and interlobular areas. The acid phosphatase, Tween-60-esterase, naphthol-AS-D-acetate-esterase, proline-oxidase and hydroxyproline-2-epimerase activities are increasing, while the leucyl-aminopeptidase and beta-glucuronidase ones are decreasing.

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