[Transdiaphragmatic approach for hepatopulmonary metastasis: cases that support its reliability and safety].

magnetic resonance imaging and angiography, which show the exact vascular architecture of the lesion in cases of highflow lesions. Ultrasound and MRI were the tests indicated in our patient, since the latter correctly defines the origin of the lesion and its relationship with adjacent structures. As for treatment, surgical removal is accepted as the definitive treatment, although we must take into account that the results are variable in terms of recurrences and the risk of intraoperative bleeding. Preoperative embolization in order to obliterate the abnormal arteriovenous connections can be useful to reduce bleeding and improve long-term recurrence rates. We have not found in the literature any cases of intramuscular AVM such as the one presented in our patient. In conclusion, we can say that AVM of the chest wall are uncommon lesions, and that correct differential diagnosis is necessary for proper management. The only symptom of our patient was the sensation of a mass that had been growing since childhood.