Wilms’ tumour, or nephroblastoma, is a malignant tumour, originating from nephrogenic germ cells that copy histology of developing kidneys and often contain cells at different stages of their differentiation. The article analyses clinical-morphological features of Wilms’ tumour, which is typical for childhood and seldom occurs in adults. The authors suppose that one of the causes of Wilms’ tumour development can be maternal complications, which arise during pregnancy, leading to inhibition of glomerulogenesis and tubulogenesis in the offspring kidneys, an increase the number of foci of primitive (immature) tissue, from which this tumour, as it is known, can originate. The described саse from practice of Wilms’ tumour is of particular interest because of an untypical age category, when the above pathology was diagnosed, demonstrates necessity of a multidisciplinary approach to its identification and necessitates its inclusion into the differential diagnostic line for the detection of kidneys tumours in adults.