[Thymectomy in myasthenia gravis: long-term evolution and predictive factors].

Abstract:

INTRODUCTION:Thymectomy is a surgical procedure which is generally accepted for treatment of myasthenia gravis. OBJECTIVE:To describe the long-term evolution of 217 myasthenic patients who had had thymectomies in the Hospital Clinico Quirurgico Hermanos Ameijeiras in La Habana, Cuba. PATIENTS AND METHODS:We determined the stage of evolution of 217 patients, followed-up periodically, with an average observation time of 83.4 months and an interval of between 5 and 155 months. We also studied the frequency of remission and the influence of a group of variables on this, as well as the mortality and its causes. RESULTS:The clinical state of the patients was: remission 77 (35.4%); pharmacological remission 45 (20.7%); significant improvement 70 (32.2%); the same or worse 5 (2.3%); deaths 11 (5%), and unknown 9 (4.1%). The cases with thymomas had a more unsatisfactory course than the other patients, with fewer remissions and greater mortality. Over the first five years of the evolution of the disease, there was a 30% rate of remission; after five years this rose to 35-40% and after ten years reached 47%. The age of the patient, duration of symptoms, histology of the thymus, age of onset of the disease and duration of follow-up did not have any significant effect (p < 0.05) on the long-term evolution of the thymectomy, in contrast to the gravity of the condition according to Osserman's scale. CONCLUSION:The results of thymectomy, in our study were good and similar to the results reported in the international literature.

journal_name

Rev Neurol

journal_title

Revista de neurologia

authors

Pérez-Nellar J,Negrín A,Llorens JA,Ferrá A,Pardo A,Parisi N

subject

Has Abstract

pub_date

2000-05-01 00:00:00

pages

801-6

issue

9

eissn

0210-0010

issn

1576-6578

journal_volume

30

pub_type

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