[Goodpasture's syndrome. Clinical case and diagnostic problems].

Goodpasture's syndrome is characterised clinically by the association of haemoptysis and haematuria and is therefore the expression of lesions localised in two different apparatus, the respiratory and the renal, with an autoimmune type mechanism (production of circulating antibodies against the glomerular and alveolar basal membrane). A case of Goodpasture's syndrome in a male of 28 is reported in which the two basic clinical signs were not in evidence, making differential diagnosis more complicated.