What is the difference between the procedures where the sympathetic chain is cut and the ones where it is fully removed?
The procedure in which the sympathetic chain ganglia are cut under the last sympathetic ganglia of interest to which ramysectomy (the sectioning of communicant branches between the intercostal nerve and the chain) has the advantage of preserving the nervous fibres that go down into the interior of the chain and then rise to distribute to the head and the throat diminishing once more, together with the superior limitation of the ganglionar dissection at T2, the risk of Claude Bernard – Horner (CBH). The absence of the complete resection of the chain can have the disadvantage of preserving abnormal ways of transmitting the sympathetic nervous influx to the brachial plexus with residually consecutive hyperhidrosis.