[Lateral cysts and fistulae of the neck. Apropos 70 cases]

Anomalies of branchial origin, amygdaloid cysts and fistulae of 1st, 2nd and 3rd slits are not rare cervical affections. Their histology is characteristic: cylindrical epithelium for fistulae and malpighian epithelium with lymphoid masses for cysts. Excision must be completed by an approach route that is sufficiently wide to avoid recurrence and vascular-neural lesions of the neck.