[Pulmonary histiocytosis from Langerhans cells as the problem of clinical morphology].

There are discussed modern views on one of the most difficult diagnosed forms of pulmonary dissemination. They relate to the dynamics of granulomatous changes in the lung tissue at the cellular and subcellular level as well as a characteristic of the immunophenotype of Langerhans cells. At present the frequency of this disease increases, which improves the responsibility for the timely diagnosis based on performing explicit clinical and morphological studies.