[Essential monolateral hematuria: to operate or not to operate? Description of a case and review of the literature].

The case of a 31 years old female with monolateral essential hematuria is reported. Histological examination of the removed kidney showed only minute hemorrhagic spots beneath the epithelium of the calyces and the pelvis. The literature is reviewed; the benign character of this type of gross hematuria and attention for saving the kidneys was stressed.