[Spontaneous renal rupture of fornix due to obstructing urethral stone].

A 53-year-old man was hospitalized due to acute right-sided flank pain. The pain went from right flank to right fossa. A non-contrast computed tomography (CT) of the abdomen showed pronounced stranding, hydronephrosis and proximal hydroureter. A CT urography showed oedema proximally around the right kidney and pyelogram. Due to lack of contrast excretion in the right kidney, initially "white kidney", there was need of an acute JJ-stent placement. No cause of obstruction was found during operation, however, after the stent placement, the patient was completely relieved of pain.