MediAI

  Introduction A 48-year-old man suddenly develops severe shortness of breath while at work. Within minutes, he experiences sharp chest pain that worsens with breathing. His oxygen saturation falls rapidly, and he is rushed to the emergency department. A chest radiograph reveals an unusual wedge-shaped opacity near the pleural surface. This classic finding, known as Hampton's Hump , immediately raises concern for one of the most dangerous emergency diagnoses in medicine: Pulmonary Embolism (PE). Pulmonary embolism remains a leading cause of preventable in-hospital death worldwide. Despite remarkable advances in medical imaging and CT scan diagnosis, PE continues to be underdiagnosed because symptoms often mimic many other cardiopulmonary diseases. This article provides a comprehensive review of pulmonary embolism, emphasizing modern radiology interpretation, CT imaging findings, emergency diagnosis workflows, and evidence-based treatment strategies. What Is Pulmonary Embolism? Pulm...

Schwannoma Mimicking Metastatic Lymphadenopathy: The Critical Imaging Clues Every Radiologist Must Know When a cancer patient undergoes PET-CT and an FDG-avid axillary mass is discovered, the immediate concern is usually metastatic lymph node involvement. In daily radiology practice, increased FDG uptake is often interpreted as evidence of malignancy. However, this assumption can occasionally lead clinicians down the wrong diagnostic path. A particularly educational case involved a 76-year-old man with a history of nasopharyngeal carcinoma who presented with dysphagia and severe pain. PET-CT revealed an FDG-avid axillary lesion with an SUVmax of approximately 4.5, strongly suggesting metastatic lymphadenopathy. Yet the final diagnosis was something entirely different: Schwannoma. This case highlights one of the most important lessons in modern medical imaging: FDG uptake does not equal cancer. Understanding the radiologic features of schwannoma across ultrasound, CT, MRI, and PET-CT is...