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The three years since the Brighton General Assembly have been the most active period in the history of the Union. 33 IAU Symposia and Colloquia, the first Regional Meeting under the Auspices of the IAU, several co-sponsored Meetings and many other special projects. All this culminating with two General Assemblies in two opposite parts of the Earth, Australia and Poland. At the same time the membership of the Union rose to 3200, the number of Commissions to 40, the number of adhering countries to 47.The present Volume gives a general picture of the Union's recent activity. It contains the report of the Executive Committee, the report of the General Assembly, including the Commissions, Meetings, a short report on the Extraordinary General Assembly and an Appendix with the Members and Commissions of the IAU and the approved names of Lunar and Martian features.I take this opportunity to thank all our collaborators, members of the Executive Committee, Presidents of Commissions, Chairmen of Specific Projects, IAU Secrt;taries and all the Members of the IA U for their contribution to keep our Union a living body of active scientists and a big international family.

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Os traumatismos vasculares iatrogénicos englobam um grupo extremamente heterogéneo de lesões com etiologias variadas e manifestações polimórficas. Apresentamos uma série de 44 doentes com lesões vasculares iatrogénicas que ocorreram durante cateterismos arteriais e venosos e intervenções cirúrgicas variadas. O cateterismo arterial para coronariografia e arterio grafia e a cirurgia ortopédica foram os agentes que mais frequentemente originaram lesão vas cular. O tratamento predominante foi a cirurgia de teconstrução arterial e venosa. A morbilidade e a mortalidade da nossa série foram de 4,6% e 2,3 , respectivamente, o que traduz a gravidade que alguns destes traumatismos comportam. SU AR Iatrogenic Vascular Injuries: Experience of the Vascular Surgery Department of Santo António General Hospital latrogenic vascular injuries include an extremely broad group of lesions with multiple etiol ogy and polymorphic manifestations. We present a series of 44 patients with iatrogenic vascular lesions that result from arterial and venous catheterizations and surgical interventions. The arte rial catheterization for coronariography and arteriography and orthopaedic surgery were the agents that most frequently caused vascular injury. Arterial and venous reconstructive surgery were the predominant treatment procedures. In our series, morbidity and mortality were 4,6 and 2,3%, respectively.