The methods of treatment most generally applicable are the use of radium
and carbon dioxide snow, igni-puncture, electrolysis, and excision.
For naevi situated on exposed parts, where it is desirable to avoid a
scar, the use of _radium_ is to be preferred. The tube of radium is
applied at intervals to different parts of the naevus, the duration and
frequency of the applications varying with the strength of the
emanations and the reaction produced. The object aimed at is to induce
obliteration of the naevoid tissue by cicatricial contraction without
destroying the overlying skin. _Carbon-dioxide snow_ may be employed in
the same manner, but the results are inferior to those obtained by
radium.
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