Dear reader of our journal (and we very much hope that there are such regular readers already!), first of all, int his editorial preface we would like to inform you that our journal “Clinical and Experimental Surgery” named after Academician B.V.Petrovsky has

Atriomegaly, as a complication of mitral valve disease develops in about 20% of patients. Long-term volume and/or pressure overload leads to remodeling of the myocardium and atrial cavities. Anatomic remodeling in cases of valvular cardiopathy is the basis for electrical

At least one-third of patients with cancer have pain at the time of their diagnosis and nearly 75% of the patients experience moderatesevere pain in the advanced and terminal stages of their disease [1]. Unfortunately, 10-15% of patients with cancer-related pain do not