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[Castleman's pseudotumor. Apropos of a case with pelvic localization].

The authors report a case of a pelvic site of a Castleman pseudo-tumour, still called angio-follicular hyperplasia or lympho-vascular hamartoma. This disorder of unknown aetiology may be situated anywhere along the lymphatic chains (70% of cases in the mediastinum). It is often associated with immuno-haematological disorders. Suitable for surgical treatment, the course is always favourable.