[Histomorphology of the pharyngoesophageal sphincter as prognostic factor of developing esophageal speech].

Histomorphologic evaluation of the pharyngoesophageal sphincter (pes) in the decreased persons aged 11-82 was done. These persons, in the lifetime, never suffered from: a) neurologic diseases (among others-myasthenia, progressive muscle atrophy), b) neoplasm of the esophagus, c) dysphagia. The aim of the report was the explanation whether the degenerative changes in pes, seen in the course of ageing, should be included into the risk factors of the high pressure occuring in its area after total laryngectomy. The analysis of the histopathological specimens revealed that after 40 years of age connective tissue in the pes is spreading and the number of muscular fibers is decreasing. Till 60 years of age the degenerative process in pes is very differentiated. Some histopathological specimens, in persons of this age section, didn't differ much from those seen in young cases. In the following decades o life degenerative process intensifies successively. In the histopathological specimens intensive proliferation of the fibrotic and fat tissue was found and considerable decrease of muscular fiber number. The investigations on risk factors of high pressure in the area of pes (results made know in paper given for print) revealed that in elder patients after total laryngectomy, its values are higher than in young ones. In patients till 55 years of age, in 72.29% (n = 26/36) of examined cases, the pressure in the pes area didn't exceed 3.99 kPa (30 mmHg). In the age of 55 years and above such a pressure was observed only 39.1% (n = 18/46) of examined. Degenerative changes in pes, depending on age, can be in part of patients (particularly in elder ones) one of the risk factors of the high pressure in the pes area, which should be taken in account in prognosis of esophageal speech mastering by the patient.