Six patients suffering from lymphangioma circumscriptum neviforme and two from lymphangioma circumscriptum localisatum were treated with an argon laser. Lymphangiomas regressed in all patients, with some scar formation. In four of the six neviform lymphangiomas there was recurrence of tiny clear pseudovesicles within 3-4 months following the first treatment. Two patients with localized type and two with neviforme type were without recurrence within 1 year following the first irradiation. A cure of extensive lymphangioma circumscriptum is not possible in our experience. Most of the patients were content with the obtained regression and accepted the slight scar formation and repeated treatments. Laser therapy for cosmetical reasons is not indicated.