Endosonography in Gastroenterology by Thian Lok Tio (auth.)

By Thian Lok Tio (auth.)

Transcutaneous ultrasonography is a longtime method for prognosis and treatment in gastroenterology. in spite of the fact that, ultrasonic pictures can usually be hampered by means of pulmonary and intestinal fuel and by way of bony and adipose tissue. In 1956 Wild and Reid said the 1st result of transrectal ultrasound of the prostate [1]. In 1976 Lutz brought an A-mode ultrasonic probe that can be brought through the biopsy channel of an endoscope [2]. In 1978 and 1980 Hisanaga played echocardiography utilizing an ultrasonic transducer hooked up to the top of a versatile device [3, 4]. In animal stories and afterward in people Di Magno has used an echoendoscope within which a small transducer used to be hooked up on the tip of a fiberoptic endoscope [5, 6]. the aim was once to beat the restrictions of transcutaneous ultrasonography by means of at once coming near near goal lesions with a high-frequency ultrasound resource through the gastroin­ testinallumen. SJlbsequently, the 1st sequence of endoscopic ultrasonography (EUS) examinations have been mentioned in the course of the eu congress in Stockholm [7]. the aim of this e-book is: 1. to guage the approach and the apparatus for endoscopic ultrasonography 2. to judge intimately the endosonographic development of the conventional and irregular wall constitution three. to investigate a wide consecutive sequence of varied gastrointestinal malignancies for you to confirm the usefulness and accuracy of EUS within the detection, staging, and remedy of malignant ailments four. to check EUS with different imaging options References 1.

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Endosonography of Bile Duct Malignancy 49 Interpretative difficulties may be encountered after prior cholecystectomy because tissue changes and lymph node enlargement after surgery may mimic neoplastic invasion. A disadvantage of this new diagnostic tool is the difficulty in passing the pylorus and particularly in intubating the second part of the duodenum. This is necessary in assessing distal common bile duct abnormality. Moreover, instrumental fragility may further limit widespread use of echoendoscopy in staging distal common duct malignancy.

The purpose ofthis study was to ascertain prospectively the accuracy and limitations ofEUS in staging pancreatic and periampullary malignancy. was given to the possibility of predicting resectability before surgery. MBtNiJlls·;md Methods Between April 1983 and October 1985 EUS was performed in 70 patients with pancreatic cancer and in 15 patients withperiampullary malignancy. For this analysis, we included only patients in whom the final diagnosis and staging were carried out at surgery. The patients fell into two groups.

Ultrascha1l4: 85 8. Lux G, Heyden N, Demling L (1982) Endoscopic ultrasonography - technique, orientation and diagnostic possibilities. Endoscopy 4: 220 9. Moore JD, Thompson NW, Appelman HD, Foley D (1976) Arteriovenous malformations ofthe gastrointestinal tract. Arch Surg 11: 381 10. Strohm WD, Classen M (1984) Endosonography mit einem Gastrofiberskop. Ultraschall5: 84 11. Terence D, Lewis MB, Laufer I, Goodcare L (1978) Arteriovenous Malformations of the Stomach. Dig Dis Sci 23: 467 12. Tio TL, Tytgat GN (1984) Endoscopic ultrasonography in the assessment of intra- and transmural infiltration of tumours in the oesophagus, stomach and papilla of Vater and in the detection of extraoesophageallesions.

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