Match each patient's clinical presentation with the most appropriate confirmatory imaging finding across various modalities.
- A 65-year-old man with atrial fibrillation is brought to the emergency department with acute right-sided hemiparesis and aphasia that began 45 minutes ago.A hyperdense middle cerebral artery sign and loss of the insular ribbon on non-contrast computed tomography
- A 45-year-old woman with metastatic breast cancer presents to the intensive care unit with acute hypotension, muffled heart sounds, and elevated jugular venous pressure.Right ventricular early diastolic collapse and a plethoric inferior vena cava on transthoracic echocardiography
- A 28-year-old man presents to an ambulatory clinic with progressive lower back pain and severe morning stiffness that improves with exercise.Bilateral subchondral bone marrow edema and cortical erosions of the sacroiliac joints on T2-weighted magnetic resonance imaging
- A 22-year-old tall, thin man presents to urgent care with sudden-onset right-sided pleuritic chest pain and dyspnea at rest.A visible visceral pleural line with an absence of peripheral lung markings on an upright posteroanterior chest radiograph
- A 55-year-old woman with known diverticulosis presents with acute left lower quadrant abdominal pain, fever, and localized peritoneal signs.Pericolic fat stranding, bowel wall thickening, and a localized fluid collection on contrast-enhanced computed tomography
Answer
The acute stroke vignette pairs with the non-contrast head CT findings; the cardiac tamponade vignette pairs with the echocardiography findings; the sacroiliitis vignette pairs with the MRI findings; the spontaneous pneumothorax vignette pairs with the plain chest radiograph findings; and the acute diverticulitis vignette pairs with the contrast-enhanced abdominal CT findings.
Each matching pair requires two sequential clinical reasoning steps: first, determining the most likely diagnosis from the patient's vignette, and second, identifying both the standard-of-care imaging modality and its classic pathognomonic finding that confirms the diagnosis.
Step-by-Step Solution
Key Concept
Selecting the appropriate imaging modality based on clinical presentation and recognizing the diagnostic pathognomonic findings for acute medical conditions.