Abstract Library

#4382 Sensitivity of endoscopic ultrasound in detecting small gastrointestinal neuroendocrine tumours

Introduction: Small gastrointestinal neuroendocrine tumours (GI-NETs) are often difficult to detect using conventional imaging modalities, leading to delayed diagnosis and suboptimal treatment outcomes. Endoscopic ultrasound (EUS) has emerged as a promising tool for the early detection and precise localisation of these tumours. However, its sensitivity in identifying small lesions remains to be thoroughly evaluated.

Conference:

Presenting Author:

Authors: Xu L, Ye M, Xue B, Tang Q,

Keywords: Endoscopic ultrasound, small gastrointestinal neuroendocrine tumour, early detection, imaging modalities,

#4350 Cytoendoscopy for determining the depth of invasion and metastasis of rectal neuroendocrine tumours

Introduction: Rectal neuroendocrine tumours (rNETs) are relatively common submucosal tumours, but even low-grade rNETs can metastasise. The significance of endocytology (EC) in the clinical evaluation of rNETs has not been reported.

Conference:

Presenting Author: Tang Q

Authors: Bai J, Tian Y, Tang Q,

Keywords: rectal neuroendocrine tumour, cytoendoscopy, invasion, metastasis, tumour grade,

#3857 The use of quantitative contrast-enhanced endoscopic ultrasound in the evaluation of pancreatic neuroendocrine tumors – Can we move from quality to quantity? A proof-of-concept study

Introduction: Contrast-enhanced EUS (CE-EUS) is a helpful tool for the diagnosis of pancreatic focal lesions, as pancreatic cancer (PC) and pancreatic neuroendocrine tumor (pNEN). The enhancement of the lesion after contrast medium injection is usually assessed qualitatively and arbitrarily by the endosonographer. Dedicated software has recently been developed to obtain an unbiased quantitative assessment using perfusion parameters.

Conference:

Presenting Author: Tacelli M

Authors: Tacelli M, Bina N, Capurso G, Zaccari P, Petrone M,

Keywords: CE-EUS, pNEN, artificial intelligence, pancreatic cancer, prediction,

#3855 Contrast-enhanced and tissue harmonic endoscopic ultrasound for pancreatic neuroendocrine tumor diagnostic

Introduction: Endoscopic ultrasonography (EUS) is an examination using ultrasound and an endoscopic device, designed to image digestive tract and adjacent organs. The combination of tissue harmonic endoscopic imaging (THI) and contrast enhancement (CE) expands its diagnostic and imaging capabilities.

Conference:

Presenting Author:

Authors: Uhrík P, Nosakova L, Kalman M, Bánovčin P,

Keywords: pancreatic, neuroendocrine, tumor, endoscopic, ultrasound, contrast, enhancement,

#3608 Endoscopic ultrasound fine-needle biopsy to assess DAXX/ATRX expression and alternative lengthening of telomeres status in non-functional pancreatic neuroendocrine tumors

Introduction: Death domain-associated protein (DAXX) and/or α-thalassemia/mental retardation X-linked (ATRX) chromatin remodelling genes mutations and alternative lengthening of telomeres (ALT) activation are associated with more aggressive behaviour of non-functional pancreatic neuroendocrine tumors (NF-pNETs).

Conference:

Presenting Author:

Authors: Mastrosimini M, Manfrin E, Remo A, de Bellis M, Pedron S,

Keywords: pancreatic tumor, ALT, FISH, immunohistochemistry,