Characteristics of the oncologic emergencies addressed by AI applications in literature

DiseaseCauseSymptomsFirst-line imagingImaging features
Cerebral herniationIncreased intracranial pressureHeadache, vomiting, different level of state of confusionCTMidline shift in confront of opposite site, masses
Spinal cord compressionMetastases could compress spinal cord directly or indirectly dislocating vertebral bodiesBack pain, paraesthesia, erectile dysfunction, weaknessMRIDislocation of the spinal cord centreline
PETumor invasion of artery branches or increased coagulation effectiveness by therapies or devicesChest pain, dyspnea, orthopnoea, cough, haemoptysisCTHypodensity or filling defects in the branches of the pulmonary arterial system after contrast
Cardiac TamponadeTumors infiltration of pericardium or due to therapies, lymphadenopathy, or infectionsChest pain, dyspneaCXR/CTCardiomegaly and epicardial fat pad sign and in CT high density of pericardial effusion in basal condition (30–45 HU in acute bleeding)
PneumothoraxDrainage mispositioned or for lung biopsy or tumors infiltration of pleuraChest pain, dyspneaCXRRadiolucent area between the lung parenchyma and the chest wall
Abdominal hemorrhageHypervascular neoplasm, splenic rupture due to lymphoma and tumors’ direct vascular invasionAbdominal pain, astheniaCTIncreased density of abdominal effusion in basal condition that tends to grow after contrast
Intestinal obstructionTumor growth within the intestinal wall or its lumenAbdominal cramping pain, vomiting, inability to defecateCXRDilatated bowel loops with air-fluid levels
Bowel perforationTumor infiltration of intestinal wallAbdominal pain, rigid abdomen on examinationCXRSubphrenic free air in frontal CRX and Rigler sign (or the double-wall sign because gas outlines both sides of the bowel wall)
Intestinal intussusceptionInvasion of intestinal wall by malignanciesAbdominal pain, nausea or vomitingCTBowel in bowel sign

CT: computerized tomography; MRI: magnetic resonance imaging; CXR: chest X-ray