[A case of lymphoid interstitial pneumonia]

A case of a 16 year old boy with interstitial lymphomatoid pneumonia coexisting with myocarditis, hepatitis, and splenomegaly is presented. The cause of the above mentioned changes despite a thorough and meticulous diagnostic approach which included microscopical examination of the lung, liver biopsies and bone marrow tap could not be made. Corticosteroid therapy did not bring a permanent improvement in the child clinical state. The boy expired quite unexpectedly. The post-mortem examination also did not provide a final diagnosis.