Nowadays, the non-operative management is the preferred strategy, when possible. During the last years, improvement in embolic techniques and agents, make feasible and effective more conditions. In the present paper current indications, technical requirements, advantages and disadvantages, contraindications are discussed. Moreover particular attention is given to the limits of the embolization procedure, suggesting some tips documented by literature data to overcome these limits. The most feared limit/complication is the risk of non-target embolization, especially when target tissues are noble organs. Skilled interventional radiologists, inserted in an adequate multi-disciplinary team, have available tricks to limit risks, complications and failures.

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