Read the CT scan and give the detailed report of this
abdominal CT interpretation AND systematic review
ACR communication of diagnostic imaging findings limitations photographs CT images interpretation
Quick answer
Create a quick-reference guide to urgent CT findings
Quick answer
| CT finding | What it may indicate | Typical urgency |
|---|---|---|
| Active contrast extravasation ("contrast blush") | Ongoing arterial or venous bleeding | Immediate trauma/surgical/interventional radiology review |
| Hemoperitoneum, hemothorax, or large retroperitoneal hematoma | Internal bleeding | Emergency |
| Aortic dissection, rupture, or leaking aneurysm | Major vascular catastrophe | Emergency |
| Pulmonary embolus, especially central/saddle or with right-heart strain | Potentially life-threatening PE | Emergency, depending on clinical stability |
| Tension pneumothorax or large pneumothorax | Lung collapse with cardiovascular compromise | Immediate treatment |
| Pericardial effusion with tamponade features | Cardiac compression | Emergency |
| Intracranial hemorrhage with mass effect, midline shift, or herniation | Brain compression | Immediate neurosurgical assessment |
| Large-vessel arterial occlusion with threatened organ/limb | Acute ischemia | Emergency |
| Finding | Important associated features |
|---|---|
| Acute intracranial hemorrhage | Subdural, epidural, subarachnoid, intraparenchymal, or intraventricular blood |
| Midline shift / brain herniation | Effaced basal cisterns, compressed ventricles, loss of sulci |
| Large acute ischemic stroke signs | Loss of gray-white differentiation, hyperdense artery sign, large territory edema |
| Hydrocephalus | Enlarged ventricles, transependymal CSF flow |
| Skull fracture with intracranial injury | Especially depressed fracture or fracture crossing vascular channels |
| Orbital compartment hemorrhage | Proptosis, optic-nerve stretch, retrobulbar hematoma |
| Finding | Suggests |
|---|---|
| Pulmonary embolism | Intraluminal filling defect in pulmonary arteries |
| Aortic dissection / intramural hematoma | Intimal flap, double lumen, wall hematoma |
| Ruptured thoracic aneurysm | Periaortic hematoma, mediastinal bleeding, contrast leak |
| Tension pneumothorax | Pleural air plus mediastinal shift or depressed hemidiaphragm |
| Large hemothorax | Pleural fluid of high density, possibly with active bleeding |
| Esophageal perforation | Extraluminal mediastinal air/fluid, pleural effusion |
| Mediastinitis | Mediastinal gas/fluid, often after surgery or esophageal injury |
| Severe pneumonia with abscess/empyema | Loculated pleural collection, enhancing pleura, gas-fluid level |
| Finding | Suggests |
|---|---|
| Free intraperitoneal air | Perforated hollow viscus until proven otherwise |
| Mesenteric ischemia | Poor bowel-wall enhancement, pneumatosis, portal venous gas, mesenteric arterial/venous occlusion |
| Closed-loop bowel obstruction | C-shaped/dilated loop, twisted mesentery, transition points, threatened bowel |
| Bowel perforation | Free air, focal wall defect, extraluminal oral contrast, localized inflammatory change |
| Active intra-abdominal bleeding | Contrast extravasation, expanding hematoma |
| Ruptured abdominal aortic aneurysm | Retroperitoneal hematoma, irregular aneurysm, contrast leak |
| Acute aortic dissection involving abdominal branches | Intimal flap and compromised visceral perfusion |
| Splenic, liver, or renal laceration with active bleeding | Trauma-related solid-organ injury |
| Severe acute pancreatitis complications | Necrosis, infected collection, hemorrhage, vascular complication |
| Intra-abdominal abscess / sepsis | Rim-enhancing fluid collection, gas within collection |
| Emphysematous infection | Gas in organ or soft tissues, such as emphysematous pyelonephritis |
| Obstructed infected kidney | Hydronephrosis with inflammatory changes, gas, or pyonephrosis features |
| Finding | Suggests |
|---|---|
| Ectopic pregnancy with hemoperitoneum | Rupture risk or rupture, in a patient who could be pregnant |
| Ovarian torsion features | Enlarged ovary, twisted vascular pedicle, edema, reduced enhancement |
| Fournier gangrene | Gas in perineal/genital soft tissues and fascial planes |
| Obstructing ureteric stone with infection | Urinary obstruction plus fever/inflammation, a urologic emergency |
| Bladder rupture | Extravasated contrast around bladder or into peritoneum |
| Pelvic fracture with active bleeding | Contrast blush, expanding pelvic hematoma |
| Finding | Suggests |
|---|---|
| Unstable spinal fracture | Translation, widening of posterior elements, multiple-column injury |
| Spinal canal compromise | Retropulsed fragments or significant canal narrowing |
| Epidural collection, if visible | Possible epidural abscess or hematoma, often better evaluated by MRI |
| Necrotizing soft-tissue infection | Fascial gas, deep fluid collections, rapidly spreading inflammation |
| Compartment-threatening hemorrhage | Large expanding hematoma, active bleeding |
Tell possible findings