By Thian Lok Tio (auth.)
Transcutaneous ultrasonography is a longtime technique for prognosis and remedy in gastroenterology. besides the fact that, ultrasonic photographs can frequently be hampered by way of pulmonary and intestinal gasoline and through bony and adipose tissue. In 1956 Wild and Reid said the 1st result of transrectal ultrasound of the prostate . In 1976 Lutz brought an A-mode ultrasonic probe which may be brought through the biopsy channel of an endoscope . In 1978 and 1980 Hisanaga played echocardiography utilizing an ultrasonic transducer hooked up to the top of a versatile tool [3, 4]. In animal reports and afterward in people Di Magno has used an echoendoscope during 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 constraints of transcutaneous ultrasonography via without delay drawing close objective lesions with a high-frequency ultrasound resource through the gastroin testinallumen. SJlbsequently, the 1st sequence of endoscopic ultrasonography (EUS) examinations have been said throughout the eu congress in Stockholm . the aim of this ebook is: 1. to guage the strategy and the apparatus for endoscopic ultrasonography 2. to guage intimately the endosonographic trend of the traditional and irregular wall constitution three. to research a wide consecutive sequence of varied gastrointestinal malignancies with a view to make certain the usefulness and accuracy of EUS within the detection, staging, and treatment of malignant illnesses four. to match EUS with different imaging suggestions References 1.
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Additional info for Endosonography in Gastroenterology
B Intramural involvement documented by initial or follow-up endoscopic biopsies. Endosonography of Non-Hodgkin Lymphoma of the Stomach 59 Fig. 2. A Endoscopic view of the polypoid (PI) lesion on the posterior wall of the middle part of the stomach. B Ulcer (u) with nodular margins. C Endoscopic ultrasonography photograph of polypoid (PI) and ulcerative (u) lesion with transmural infiltration (i) in more distal stomach bordering the pancreas (P). The circular line to the right is the balloon (b) Only in patient 3 did EUS fail to accurately recognize the abnormality because the target lesion could not be brought into the focus of the beam due to inadequate filling of the stomach lumen or the balloon, or both, with deaerated water.
Materials and Methods Between April 1984 and April 1985, EUS was performed in the Academic Medical Center on 8 patients with proven or suspected NHL of the stomach. The patients fell into two groups. The first consisted of 4 patients with gastric NHL proven by initial endoscopic biopsy before EUS. The second group consisted of 4 patients with negative endoscopic biopsies but with an abnormal gross appearance at endoscopy or a long history of recurring ulcer disease suggesting a gastric malignancy.
A diagnosis was considered correct when abnormalities were visualized that were of sufficient magnitude to cause the investigator to strongly suspect malignancy, e. , destruction of normal gastric wall architecture, transmural infiltration, and infiltration into surrounding tissues. The results of EUS were compared with those obtained by endoscopy, barium meal studies, CT scan, surgical exploration, or detailed histologic examination of autopsy specimens. The endoscopic ultrasonographic studies were performed with a prototype Olympus echoendoscope, third generation GF-UMl, which has been described elsewhere [12-15, 17].
Endosonography in Gastroenterology by Thian Lok Tio (auth.)