Spontaneous renal vein thrombosis: a rare cause of acute flank pain

The differential diagnosis of acute onset flank pain include renal colic, papillary necrosis, pyelonephritis and renal infarction from renal artery thrombosis or embolism. Here, we describe a case of acute onset flank pain caused by unilateral renal vein thrombosis (RVT) in a previously healthy