[Rare disorders in neck surgery].

The diagnosis and treatment of unusual surgical conditions of the neck in the newborn, infancy, and paediatric age-group are discussed. The median cervical cleft, the scalenus cervical rib syndrome, the cervical teratoma, changes of the thymus, tumour-like abnormalities of the large veins, calculus formation of the sub-mandibular salivary gland, severe traumatic and iatrogenic injury may all present difficult diagnostic and therapeutic problems.