[Yellow nail syndrome associated with sinusitis, rheumatoid arthritis, and chronic bronchitis]. / Síndrome de las uñas amarillas asociado a sinusitis, artritis reumatoide y bronquitis crónica.

A case of a 70 year old patient with the "yellow nail syndrome", that was associated to sinusitis, rheumatoid arthritis and chronic bronchitis. We comment the several studies realized (radiologic, mycologic, bacteriologic and laboratory studies) and the low effectivity of the treatment assayed.