The textbook assembled in Russian and English in separate editions. Exposition of the basic materials in two languages has diff erent goals. For foreign students who are learning phthisiatry in English to help to obtain the material in Russian language. For foreign students studying phthisiatry in Russian to give the opportunity to understand material more deeply. For Russian students to give the opportunity for perfection of their English, which is the language for professional communication in international medical forums. The textbook is designed for medical students.]]>