[Pathomorphologic features in several phlebopathies associated with virus, rickettsia, chlamydia, and mycoplasma infections].

Seventy-six venous specimens were examined by indirect immunofluorescence and histological techniques. 80.26% out of them gave negative I.F. reactions. The following causal agents were found on the I.F. positive preparations: Rickettsia burneti, Chlamydia, Mycoplasma, parainfluenza type 3 and adenoviruses, alone or associated. The most frequent lesion noted in I.F. positive specimens was of the inflammatory-dystrophic type. In I.F. negative preparations the dominant lesion was the hyalinosis of the tunica media.