Match each patient's clinical presentation to the single most appropriate initial or alternative imaging modality, taking into account patient-specific risk factors and evidence-based guidelines.
- A 42-year-old woman presenting with a newly identified, palpable 2-centimeter firm mass in the upper outer quadrant of her right breast.Diagnostic mammography and targeted ultrasonography
- A 28-year-old woman at 32 weeks gestation presenting with acute pleuritic chest pain and dyspnea, with a high clinical suspicion for pulmonary embolism and a normal initial chest radiograph.Ventilation-perfusion (V/Q) scan
- A 68-year-old man with a history of treated prostate cancer presenting with progressively worsening, focal lumbar back pain that is particularly severe at night.Magnetic resonance imaging (MRI) of the spine
- A 54-year-old man presenting with acute, severe left lower quadrant abdominal pain, a temperature of 38.2°C (100.8°F), and marked leukocytosis.Computed tomography (CT) of the abdomen and pelvis with intravenous contrast
Answer
The palpable breast mass requires diagnostic mammography and targeted ultrasonography. The pregnant patient with a normal chest radiograph should undergo a V/Q scan. The patient with suspected spinal metastasis needs an MRI of the spine. The patient with suspected acute diverticulitis should receive a CT of the abdomen and pelvis with contrast.
Each clinical scenario requires the application of specific guidelines for ordering imaging studies. Age-based criteria dictate breast imaging modalities, pregnancy status and baseline radiographs influence the choice of advanced pulmonary imaging, oncologic history directs the evaluation of back pain, and typical syndromic presentations guide the evaluation of acute abdominal pain.
Step-by-Step Solution
Key Concept
Selecting appropriate diagnostic imaging based on patient-specific contraindications (such as pregnancy) and established clinical guidelines for high-yield presentations.