The authors present 3 cases of vesical tumours discovered during pregnancy, which, according to literature, very rarely happens. These women from the low socio-economic strata had many children and were seen at a late stage when diagnosis of vesical tumours is easily distinguished from haematuria, recurrent cysts and hypogastric tumours. The prognostic is bad, resulting most frequently in death due to kidney failure with purulent peritonitis from perforation of the tumour or its evolving towards the vertebral metastasis, and chronic suffering for the foetus. The need for early discovery through urinary indications is stressed, as is the need for public health education and easy accessibility to the medical services.