[Selective laryngeal re-innervations in the dog by nervous microsutures of branches of the recurrent laryngeal nerve].

Introduction: This work has been carried out to investigate in an animal model, the possibility of surgical selective reinnervation of the larynx following destruction of the laryngeal branch of the vagus nerve.

Material And Methods: In ten dogs, on the right side of the neck only, the recurrent laryngeal nerve was identified, cut and section of the nerve removed. Following this the hemi-larynx on the operated side was reinnervated in the following manner.

[Malignant cervical epithelial adenopathy from unknown primary source. Apropos of a series of 54 cases].

Fifty four patients with cervical lymph node metastasis from an unknown primary tumor underwent treatment from 1969 to 1988. Fourty five underwent radical neck dissection. 69% had node capsular effraction and 36% perinodal vascular embolism.

[Cervical branchiomeric paraganglioma. Report of 21 cases].

Over the last 24 years the authors operated 21 branchiomeric paragangliomas in 18 patients. They emphasize the difficulty of making the diagnosis and the importance of completing a thorough work-up before deciding surgery. Adequate imaging is particularly important (neck sonography, computed tomography, arteriography) to avoid making the diagnosis by exploratory neck dissection and to assess the vascular risk.

[Tracheo-bronchial granular cell tumors. Apropos of 4 cases].

We have seen four cases of granular cell tumor (Abrikossoff's tumour) and it is recalled that these tumours are most often discovered fortuitously by bronchoscopy in the tracheo-bronchial region because they have a non specific clinical presentation. The cytological and histological characteristics enable an accurate diagnosis but there are problems posed as to the histogenesis of these tumours. With a tumour with a slow progression regular surveillance with regular biopsies seems preferable as in certain cases the tumour regresses spontaneously or disappears after ablation with the forceps.

Anatomy of the larynx, study of the anterior branch of the recurrent laryngeal nerve.

These studies are based upon 60 dissections of the recurrent laryngeal nerve. The authors describe the branches destined for the intrinsic musculature of the larynx. This study is a working approach for the operations of selective laryngeal reinnervation in man.