The author analyses experience in over 400 one-stage concurrent operat
ions conducted on several organsinvolved in various diseases (benign a
nd malignant). Previous experience in combined operations performed in
generalized carcinomas of the abdominal organs and gradual perfection
of the anesthesiological and resuscitation service in patients with m
arked disorders of metabolic processes (unspecific ulcerous colitis, C
rohn's disease, diffuse familial polyposis, etc.) made it possible to
carry out successful concurrent operations not only of moderate and se
vere degree of injuriousness but also particularly injurious intervent
ions. Among the last named were 34 interventions: several severe opera
tions were performed in one-stage for two to four diseases, e. g. on t
he lung, liver, and intestine or pancreaticoduodenal resection was com
bined with two resections of the large intestine, etc.