Titlebook: An Atlas of Rectal Endosonography; J. Beynon,G. Feifel,N. J. McC. Mortensen Book 1991 Springer-Verlag London Limited 1991 Endoluminal ultr

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Benign Rectal Tumours, Anal Canal, Perianal Disease and Other Conditions,nd be either pedunculated or sessile. Generally the larger the adenoma the greater the likelihood of a focus of malignant invasion. Polypoid adenomas smaller than 1 cm in diameter have less than a 1% incidence of invasion, whereas in adenomas larger than 2 cm there is a 35% incidence of invasion in

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scular tracts. There is hope that adaptation of ultrasonographic technology will aid in the surgical management of this malady. Clearly, rectal ultrasonography has considerable potential in the management of rectal carcinoma. Accuracy rates in the range of 90% for the depth of neoplastic invasion have been re978-1-4471-1882-4978-1-4471-1880-0

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