Fig. 1From: Spontaneous retroperitoneal hematoma: a case reportCT and MRI of the abdomen. a Contrast-enhanced CT revealed a large low-density area (arrow heads) in the left peritoneal space. b Coronal contrast-enhanced CT revealed a low-density area (arrow heads) in the left retroperitoneal space. Neither extravasation nor causative aneurysm was observed. c T1-weighted MRI revealed that the mass (arrow heads) was encapsulated by hyperintense rims. d Coronal T1-weighted MRI performed after gadolinium administration revealed no extravasation in the mass (arrowheads). e T2-weighted MRI showed homogeneously high intensity in the mass (arrowheads). f Coronal T2-weighted MRI showed homogeneously high intensity in the mass (arrowheads). CT computed tomography, MRI magnetic resonance imagingBack to article page