Diagnosis: Gonadal (ovarian) vein thrombosis Contrast-enhanced axial (left image) and coronal (right image) CT demonstrate a non-occlusive, linear filling defect in the right gonadal vein (arrows). Discussion Overview of ovarian…
Diagnosis: Retroperitoneal hematoma Axial (left and middle images) and coronal (right image) unenhanced CT images demonstrate a large fluid collection with a hematocrit level (yellow arrow). There is hyperdense blood…
Diagnosis: Monteggia fracture–dislocation Frontal radiograph of the forearm demonstrates a displaced mid ulnar diaphyseal fracture (yellow arrow), with anterior dislocation of the radial head (red arrow). The radius is partially…
Diagnosis: Hematoma secondary to a bleeding renal angiomyolipoma Coronal (left image), axial (middle image), and sagittal (right image) contrast-enhanced CT images demonstrate retroperitoneal hemorrhage surrounding an exophytic, fat-containing, hypervascular right…
Diagnosis: Splenic infarction Initial unenhanced coronal CT (left image) demonstrates a hyperdense lesion (arrow) in the medial spleen, consistent with hemorrhage. Subsequent contrast-enhanced axial (middle image) and coronal (right image)…
Diagnosis: Diverticulitis with abscess Axial (left image) and coronal (right image) contrast-enhanced CT shows thickening of the sigmoid colon, with pericolonic fat stranding. A focal fluid collection (arrows) containing foci…
Diagnosis: Foramen of Winslow hernia containing incarcerated cecum CT topogram (left image) and coronal IV and oral contrast-enhanced CT (middle image) show dilated, gas-filled cecum (yellow arrows) in the left…
Diagnosis: Perforated duodenal ulcer Axial and coronal oral and intravenous contrast-enhanced CT images show a thickened duodenal wall, with oral contrast extravasating through a wall defect (yellow arrow). There is…
Diagnosis: Meckel’s diverticulitis Axial (left image) and coronal (right image) contrast-enhanced CT images show a large, blind-ending tubular structure to the left of midline with thickened walls (arrows). There is…
Diffusion is a powerful diagnostic tool that measures water molecule displacement of the size order of cell structures (a few micrometers). Hence it is sensitive to microstructural changes in brain…
