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[Thymus surgical pathology in children].

The object of this paper is to briefly review the surgical aspects of the thymic pathology. Thymic cysts and thymic ectopy are usually asymptomatic and are one of the multiple etiologies of cervical masses. Thymic tumors are very rare and may sometimes be difficult to differentiate from simple thymic hyperplasia; being almost always separated from the normal thymic tissue by a dense capsule, they do not tend to extend rapidly. Thymectomy may be indicated in severe myasthenia.