By Elisabetta de Lutio di Castelguidone, Antonella Messina
This publication goals to supply a whole evaluate of the analysis and therapy of gastrointestinal stromal tumors (GISTs). it's been conceived to be either an in depth consultant for medical perform and an up to date reference for all these concerned with the assessment of GISTs imaging. The book presents entire descriptions of the complete variety of universal imaging and nonimaging thoughts utilized in the analysis and followup of GISTs. suggestions reviewed contain: traditional radiography· Endoscopy and endoscopic ultrasound· traditional, color-Doppler and contrast-enhanced ultrasound· Computed tomography· Magnetic resonance imaging, and· Contrast-enhanced PET/CT imaging. either scientific and surgical procedure thoughts also are totally reviewed. ultimately, the e-book concludes with a bankruptcy that goals to stimulate frequent curiosity within the formation of latest GISTs devices. Written through specialists within the box, the e-book is enriched all through by means of a number of black-and-white and colour photos, making it a useful resource of data in addition to an critical advisor to reading pictures for radiologists, gastroenterologists, pathologists, oncologists and surgeons.
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Additional info for GISTs - Gastrointestinal Stromal Tumors
Example text
B EUS appearance suggestive of benign submucosal mass of the muscularis propria. Follow-up is underway the digestive tract. There is a good correlation between EUS images and the anatomy of the wall of the digestive tract (Fig. 15). Although there are some differences in relation to the tract examined, at EUS the intestinal wall appears to be composed of five distinct echogenic layers, char- acterized by the alternation of images with hyperechoic and hypoechoic appearance, which internally-to-externally are as follows: – the interface between the mucosa and the organ lumen (hyperechoic layer); – the deep mucosa (hypoechoic layer); 34 P.
The differential diagnosis includes benign and malignant, primary and secondary tumors. Benign masses include first of all lipomas and adenomas. Lipomas are preferentially located in the ileum; b appear as ‘filling defects’ oval or round in shape, sharply defined, sessile or pedunculated. They are generally deformable following the physiologic activity of intestinal peristalsis and upon targeted compression during radiological examination. Adenomas may also appear as "filling defects" and display a broad base, with a homogeneous or irregular “cauliflower” appearance and radiolucent bands (‘soap bubble’ appearance described by Waters in 1930) [1, 3-6].
A b Fig. 5 a, b Leiomyoma on the posterior wall of the of the gastric body. Note the typical features of a submucosal mass (arrow) a with the gastric lumen, containing air or with airfluid levels, and in which intraluminal contrast material may accumulate [4]. The differential diagnosis of course includes other mesenchymal tumors such as leiomyomas, leiomyosarcomas, schwannomas, neurofibromas and neuroendocrine tumors (such as solitary gastric carcinoids). However, leiomyomas, leiomyosarcomas and schwannomas are relatively rare in the tract considered, b Fig.