Venous
malformation (or cavernous hemangioma)
lesions can be treated
with sclerotherapy.
Depending on the size of the venous malformation
lesion, several
sessions may be needed. Surgical removal of
venous malformation is feasible for small focal lesions. Most
patients describe "growing back"
following surgery, and surgery may cause large
tissue necrosis and scars. Venous malformations
("cavernous hemangioma") generally respond
well to sclerotherapy (up to 70-80%).
Arteriovenous malformations (AVM) need to be
treated with transcatheter or percutaneous embolization
rather than by surgical excision. Lymphatic
malformations or cystic hygroma lesions can also be
treated by sclerotherapy, particularly
macrocystic (cystic hygroma) and mixed form
lymphatic malformations. Microcystic lymphatic
malformations can only be treated with surgical excision (if
possible). Radiofrequency ablation can be used
in selected cases.
Klippel-Trenaunay syndrome is usually managed
conservatively. Superficial varicoid veins can
be sclerosed or removed surgically, but it is
very important to check the patency of the deep
venous system in these patients. Parkes
Weber
syndrome is generally approached in a similar
manner to AVM lesions. Other combined anomalies are
also managed conservatively in most cases, and
intervention (either surgical or transcatheter
such as sclerotherapy or embolization) is used
in selected patients if needed.
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