By Alain Weissman MD, Jacques Grellet MD, Michel Clot MD (auth.)
It is a smart excitement for me to introduce and to suggest this a lot wanted textual content on double distinction exam of the colon. it's aimed either at clinicians who request X-ray examinations of the colon and at radiologists who needs to in step with shape and interpret those reviews. during the last decade there was renewed curiosity in X-ray exam of the colon regardless of the large advances in endoscopy and imaging tech nology. This renewed curiosity is evidenced by means of the proliferation of recent books on radiology of the colon. although, prior discussions of double distinction ex amination have centred totally on the approach with too little consciousness to the knowledge and interpretation of the radiologic pictures. This quantity is exclusive in its emphasis at the fundamentals of photo formation and interpretation. It emphasizes the significance of the anteroposterior relation ships of the colon in making a choice on the distribution of barium and air. It additionally rec ognizes the effect oflocation at the radiologic visual appeal of the lesion. The authors show a profound knowing of the rules of double distinction analysis as utilized to the colon. additionally they have a superb seize of the gross pathologic adjustments underlying the radiologic photographs. the fabric is gifted in a logical and analytical technique which will be relatively necessary to the newbie during this box. there are various valuable diagrams and the ra diographic illustrations are of good quality.
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Extra resources for Double Contrast Examination of the Colon: Principles and Practice
The latter passes in a cranial and dorsal direction toward the hepatic flexure. It is maintained in contact with the posterior abdominal wall by the peritoneum. The transverse colon describes a curve with its convexity pointing in a caudal and ventral direction. Its central segment comes into contact with the anterior abdominal wall. It is attached at the hepatic flexure to the medial border of the descending duodenum (a few centimeters right of the medial line). The remaining two-thirds is movable.
11. Appearance of the base according to the incident angle (montage): A The incident beam is perpendicular to the axis of the colonic segment containing the tumor. The base of the lesion is clearly seen since the lesion is in strict profile. B The incident beam is no longer perpendicular to the axis of the colonic segment. The resulting image of the base is helical and the indentation is not as distinct B c A Fig. 12. Sessile micropolyp (flat): A, three-quarter view: oval image (arrow) ; B, frontal view : Ring shadow (arrow); C, more pronounced three-quarter view: minimal hat sign (arrows) 58 Radiologic Signs in Tumoral Pathology B A Fig.
Normal colon: propulsive transport contraction. The caliber remains normal; haustral clefts are much fewer, especially in the left colon during the examination and tend to become more pronounced if it is prolonged. 2. 25), which is seen much less frequently, is where the colon is tubulated with a caliber which is normal but smaller than in the previous case. Haustra are practically nonexistent in the left colon and rare in the right colon. " It is important to note that both appearances may be found in the same patient during the same or repeated examinations.
Double Contrast Examination of the Colon: Principles and Practice by Alain Weissman MD, Jacques Grellet MD, Michel Clot MD (auth.)