The manual was prepared by experienced clinician teachers of the Military Medical Academy. S. M. Kirov. It presents, first of all, those diseases of the internal organs, in which therapists and surgeons often take part in the diagnostic process and treatment of patients, or therapeutic pathology determines the features of the provision of surgical care. The clinical material allows therapists to better understand the surgical aspects, and surgeons - the therapeutic features of the studied pathology and, therefore, better prepare for independent work in their specialty.The manual is intended for clinical residents of therapeutic and surgical training profiles, it can be useful and for doctors of other specialties.On the cover are the outstanding founders of the therapeutic and surgical schools of the country at the beginning of the 20th century: Sirotinin V.N. 1917 - in exile) | Fedorov S.P. (on the right) - life physician, head of the department of hospital surgery of the IVMA (after 1917 - VMA of the Red Army). Both are immortalized in the names of departments.