title: [A case of pseudo-tumoral lymphoid hyperplasia or Castleman's disease].
abstract: The relatively rare pseudotumoral lymphoid hyperplasia (benigh lymphoid or reactive lymphoreticular hyperplasia; pseudolymphoma; Castleman's disease) arises from the lymph nodes, usually in the mediastinum. The disease assumes tow histologically and clinically different forms: the first, angiofollicular, is often symptomless, while the second, lymphoplasmocytic, is sometimes associated with a marked chronic inflammatory syndrome. The etiology is unknown, but is probably a reaction of the lymphoplasmocytic system to an antigen, possibly of viral origin. Diagnosis is based on histology. Surgical treatment is curative. A rare form of this unusual disease is reported with reference to the morphological differential diagnosis; the similarities with immunoblastic lymphadenopathy are emphasized.
mesh_terms: D000328:Adult; D001799:Blood Sedimentation; D005260:Female; D006801:Humans; D006965:Hyperplasia; D008198:Lymph Nodes / Q000601:surgery; D008206:Lymphatic Diseases / Q000175:diagnosis* / Q000601:surgery; D008482:Mediastinum / Q000601:surgery
vernacular_title: Un cas d'hyperplasie lymphoïde pseudo-tumorale ou maladie de Castleman.