[Iris metastasis from cancer of the esophagus].
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Biomedical subjects
Publications and source records attributed to A Ducasse.
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The main neurovascular structures related to the medial wall of the orbit were studied in 70 orbits after injection of the orbital arterial bed with latex dye. The position, anatomical relations and variations of the ophthalmic and ethmoidal arteries and trochlear and nasociliary nerves are described. Some differences were noted in comparison to classical anatomical descriptions, notably regarding the position of the ophthalmic artery which was commonly found to lie medial to the obliquus superior muscle distal to the point where it crosses under the muscle. An important surgical landmark, the lateral orifice of the anterior ethmoidal canal which lodges the anterior ethmoidal artery, was noted and its position described.
The authors report an anatomical, morphological and functional study on the diaphragmatic passage of the esophagus. This study allows to conclude that the anatomical structures of the region play an important role in gastroesophageal continence. The idea of "physiological sphincter" must be broadened and take into account the crura of the diaphragm which from a true extrinsic anatomic sphincter. The authors also insist on the dynamic aspect of this region and on the variations of pressure related to the respiratory movements. From a practical standpoint, the conclusions of this study should permit the surgeon to make a dynamic investigation of gastroesophageal reflux and adapt treatment to a more precise physiopathological mechanism.
The authors present the results obtained in the treatment of oedematous diabetic retinopathy of 70 patients, i.e. 129 eyes. Follow-up was from 6 months to 6 years. Argon laser photocoagulation of the posterior pole is simple and without risk at the early stages of oedematous retinopathy, and has also proved to be effective in the later stages. Out of 115 eyes exhibiting oedemas of the posterior pole, 84% were stabilized or improved. The same encouraging results were obtained in the case of macular oedemas. Ideally, regular follow-up and treatment as required should prevent cystoid degeneration of the macula.
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A precise knowledge of the sectorial anatomy of the liver and its variations is essential in order to be able to localize lesions in the parenchyma and to guide segmental resection of the liver. The hepatic systematization proposed by Couinaud and the nomenclature of the segments, which are numbered from I to VIII, are of obvious practical value and are used routinely by surgeons and radiologists. However, they do not take into account the exact position of the liver in the abdominal cavity. For this reason, we prefer to use a topographical nomenclature, based on J. Hureau's classification, consisting of a right posterior column, corresponding to Couinaud's right lateral sector (segments VI and VII), a right lateral column, corresponding to the right paramedian sector (segments V and VIII), a right paramedian column, corresponding to segment IV, a left lobe column, corresponding to segments III and II, and a dorsal sector corresponding to the caudate lobe or segment I. This nomenclature, which takes into account the position of the liver in the abdominal cavity, constitutes a compromise between the Anglo-Saxon nomenclature and Couinaud's segmental classification. It clearly emphasizes the posterior nature of the right lateral sector, the lateral position of the right para-median sector and the anterior position of the two sectors of the left lobe.
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