Retroperitoneal neurogenic tumor diagnosed by endoscopic ultrasonography

Retroperitoneal neurogenic tumor diagnosed by endoscopic ultrasonography.

Splenic Cyst Mimicking Gastric Subepithelial Tumor Diagnosed by Endoscopic Ultrasonography

Recent research reveal that the diagnosis of gastric extraluminal compressions mimicking subepithelial tumor is increasing in numbers as esophagogastroduodenoscopy becomes widespread. Endoscopic ultrasonography is a very useful tool for differentiating extraluminal compressions from subepithelial tumors. Gastric extraluminal compressions are due to compression by either normal adjacent organs o...

Retroperitoneal schwannoma diagnosed by endoscopic ultrasound-guided fine-needle aspiration.

A 59-year-old white man was referred for evaluation of epigastric pain that was radiating to his back and a 5-kg weight loss over 6 months. A computed tomography (CT) scan revealed a heterogeneous low-attenuation tumor, measuring 5cm in size, adjacent to the celiac artery and the pancreatic body (●" Fig.1). Sectorial endoscopic ultrasound (GF-UCT140-AL5; Olympus America Inc., New York, USA), co...

Gastric Schwannoma Diagnosed by Endoscopic Ultrasonography-Guided Trucut Biopsy

Schwannomas of the gastrointestinal (GI) tract are rare subepithelial tumors comprising approximately 3.3% to 12.8% of all mesenchymal tumors of the GI tract. On endoscopic ultrasound (EUS) they are seen as hypoechoic tumors arising most commonly from the 4th proper muscle layer. Although EUS helps to distinguish tumor characteristics, tissue sampling is required for differentiation with other ...

Retroperitoneal Cystic Lymphangioma Diagnosed by Endoscopic Ultrasound-Guided Fine Needle Aspiration

Retroperitoneal cystic lymphangiomas are rare tumors of the lymphatic system. These tumors usually present in childhood and are often diagnosed incidentally with imaging procedures. Although benign, they can grow to large sizes and become symptomatic due to their compressive effects. They can cause diagnostic dilemmas with other retroperitoneal cystic tumors including those arising from the liv...