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Perivascular Epithelioid Cell Tumor (PEComa): Rare Imaging Diagnosis, CT Findings, and Modern Treatment Guide

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  Perivascular Epithelioid Cell Tumor (PEComa): The Rare Tumor Every Radiologist Should Recognize Imagine a young patient arriving in the emergency department with nothing more alarming than a fever and a cough. A routine chest X-ray is performed. Instead of pneumonia alone, the radiologist discovers a large thoracic mass. Further CT imaging reveals a second renal lesion. Biopsy later confirms an exceptionally rare diagnosis: Perivascular Epithelioid Cell Tumor (PEComa). This scenario illustrates why PEComa matters in modern medical imaging , CT scan diagnosis , and radiology interpretation . Though uncommon, PEComa can mimic more common malignancies and may appear in the kidney, liver, mediastinum, uterus, lung, retroperitoneum, and soft tissues. For clinicians, radiologists, oncologists, and informed readers, understanding PEComa is increasingly important because targeted therapy using mTOR inhibitors has transformed treatment in selected patients. What Is Perivascular Epithelio...
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Fibrolipomatous Hamartoma of the Median Nerve: MRI & CT Scan Diagnosis, Radiology Interpretation, and Best Treatment Guide for Rare Imaging Cases

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  Introduction A 35-year-old man presents with progressive wrist pain, swelling in the palmar wrist, and intermittent numbness. Initial concern may include a ganglion cyst, nerve sheath tumor, or tendon pathology. However, advanced medical imaging reveals a far rarer diagnosis: Fibrolipomatous Hamartoma (FLH) of the median nerve. This uncommon benign lesion is one of the most fascinating entities in radiology interpretation because it often demonstrates pathognomonic MRI findings that allow diagnosis without biopsy. For clinicians, radiologists, orthopedic surgeons, and imaging professionals, understanding FLH is crucial because it can mimic more aggressive pathology while requiring a very different management strategy. In this comprehensive guide, we review: Pathophysiology Epidemiology Clinical presentation MRI, CT scan, diagnosis , X-ray, and ultrasound findings Differential diagnosis Stepwise diagnostic workflow Treatment strategies Prognosis Quiz section for learning retent...
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Severe Iatrogenic Subcutaneous Emphysema After Thoracic Surgery: CT Scan Diagnosis, Radiology Interpretation, and Emergency Management Guide

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  Introduction A patient develops sudden swelling of the chest wall, neck fullness, crackling skin, and respiratory discomfort after thoracic surgery. A chest radiograph is ordered urgently. What appears to be harmless soft-tissue air may actually signal an evolving postoperative complication requiring immediate evaluation. This is the clinical reality of iatrogenic subcutaneous emphysema —air trapped within subcutaneous tissues due to a medical procedure, surgery, chest tube placement, or airway intervention. While often self-limited, severe cases may indicate persistent pneumothorax, bronchopleural fistula, tracheobronchial injury, or inadequate thoracic drainage. In modern medical imaging , especially MRI, CT scan diagnosis pathways (with CT preferred here), early recognition is essential. Accurate radiology interpretation can distinguish benign postoperative air from dangerous expanding emphysema requiring urgent action. This article reviews the condition using a real p...
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Gastrinoma With Local Metastatic Lymph Node Causing Zollinger-Ellison Syndrome: CT Imaging, PET Diagnosis

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  Introduction A 63-year-old woman arrives with abdominal pain, vomiting, and intermittent diarrhea. She has a history of diabetes, hypertension, and GERD. At first glance, this may appear to be common gastroenteritis, medication-related gastritis, or peptic ulcer disease. But advanced medical imaging , laboratory evaluation, and nuclear medicine reveal a much rarer cause: gastrinoma with local metastatic lymph node causing Zollinger-Ellison syndrome (ZES). This case highlights one of the most important truths in radiology interpretation and CT scan diagnosis : common symptoms can hide uncommon disease. Gastrinoma is a rare neuroendocrine tumor that secretes gastrin, causing uncontrolled gastric acid production. The result can be recurrent ulcers, severe diarrhea, intestinal inflammation, and life-threatening complications. Detecting these tumors requires high clinical suspicion and modern imaging such as contrast CT, MRI, endoscopy, and 68Ga-DOTATATE PET/CT . For clinicians...
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