Correlation of endoscopic ultrasonography (EUS) for differential diagnostics between inflammatory and neoplastic lesions of the papilla of Vater and the peripapillary region with results of histologic investigation.

Purpose: There is currently no imaging procedure that allows precise differentiation between inflammatory and malignant lesions of the papilla of Vater (papilla) in a satisfying manner. The aim was to study whether endoscopic ultrasonography (EUS) as an initial diagnostic step 1. may have the potential to distinguish between different tissue characteristics, such as tumor growth or inflammation of the papilla, because of its high resolution capacity and 2.

Successful endoscopic treatment of an esophageal duplication cyst.

Duplication cysts of the gastrointestinal tract are rare, particularly in adults. Endoscopic minimally invasive treatment is still a challenging approach even in the endoscopically accessible sections of the gastrointestinal tract. In a 25-year-old patient suffering from dysphagia, an endoscopy and subsequent endosonography revealed a spherical duplication cyst in the lower third of the esophagus, which prompted us to puncture the cyst and subsequently to perform a fenestration (marsupialization; diameter 1 cm) in the anterior wall of the cyst, resulting in permanent drainage of the cystic fluid.

Successful endoscopic management of iatrogenic mediastinal infection and subsequent esophagomediastinal fistula, following endosonographically guided fine-needle aspiration biopsy.

Complications following endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) biopsy are rare. A 75-year-old man underwent EUS-FNA biopsy of an enlarged mediastinal lymph, which histologic investigation revealed to be a metastasis of a hepatocellular carcinoma. The patient developed the postinterventional complication of suppurative infection within the mediastinum.