title: [Causes of negative x-ray changes in the lungs of patients with tuberculosis].
abstract: The study examines various manifestations and causes of negative X-ray changes (NXC) in the lung of patients with tuberculosis, which were observed by the authors in 7% of cases. Among the causes of NXC, there was a predominance (64.7%) of progressive tuberculosis caused 7 leading predisposing factors, whereas in other cases (35.3%). NXC were due to the addition (exacerbation) of concomitant abnormalities, to the occurrence of adverse reactions to antituberculous drugs, etc. The establishment of these causes facilitates the verification of a diagnosis and promotes the rational use of the bed fund of specialized hospitals.
authors.forename: V B
authors.initials: VB
authors.lastname: Ivanovskiĭ
authors.forename: A S
authors.initials: AS
authors.lastname: Neĭshtadt
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008875:Middle Aged; D011379:Prognosis; D013902:Radiography, Thoracic; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging*