Computerization of the radiological image (digitization, com puted tomography), the diagnostic contributions of ultra sonography, and the advent of magnetic resonance imaging all herald a new era in radiology. While this discipline retains its clinical nature, and continues to group together various specialities, the technical "common denominator" plays an increasingly important role, and requires a more global ap proach to the clinical problem. Centralization of state-of-the-art equipment in technical imaging centers - strategic points in future hospitals - will al low clinical radiologists to perform all of the examinations re quired for diagnosis and follow-up with a high degree of reli ability, under optimum security, and at the lowest possible cost. This is the right moment to publish this treatise, as we begin to apply this new approach to radiological studies. For purposes of clarity, the lymphomatous processes have been dealt with by anatomical location; more important, though, is the discussion of the multiple aspects of diagnosis, with particular emphasis on recent noninvasive modalities (characteristic visceral lesions; analysis and characterization of the anatomical and tissue components of these lesions with the highest possible degree of precision; regional disease ex tension and anatomical features; information on concomitant regional involvement and distant sites), allowing selection of appropriate therapy and surveillance strategies."

Only a few years ago, most treatises on sonography covered all the diagnostic applications of ultrasound, de scribing organs from the brain down to the placenta. Dr. Bruneton and his associates must be thanked for pre senting this book devoted to the spleen. It probably offers the most complete presentation of details and the richest images available in its field. This book will thus become the ultimate reference in most libraries of books on son ography. March 1988 F. Weill The authors wish to thank Christine Rostagni, Fran ise Fein, and Bernard Fontaine for their assistance in the preparation of this book. Contents 1 Sonographic Anatomy of the Normal Spleen, Normal Anatomic Variants, and Pitfalls B. Senecail . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 Anatomy of the Spleen. . . . . . . . . . . . . . . . 1 1. 1. 1 Morphology and Structure . . . . . . . . . . . . . 1 1. 1. 2 Location and Relations of the Spleen. . . . . . . . 3 1. 1. 3 Average Dimensions of the Cadaver Spleen . . . . 5 1. 1. 4 Congenital Anomalies and Normal Variants. . . . 5 1. 1. 4. 1 Fissured Spleen. . . . . . . . . . . . . . . . . . . . 5 1. 1. 4. 2 Lobulated Spleen. . . . . . . . . . . . . . . . . . . 5 1. 1. 4. 3 Spleen with Two Hili. . . . . . . . . . . . . . . . . 5 1. 1. 4. 4 Wandering or Ectopic Spleen . . . . . . . . . . . . 6 1. 1. 4. 5 Numeric Anomalies . . . . . . . . . . . . . . . . . 6 Ultrasonography of the Spleen . . . . . . . . . . . 1. 2 6 1. 2. 1 Equipment . . . . . . . . . . . . . . . . . . . . . . 6 1. 2. 2 Patient Examination . . . . . . . . . . . . . . . . . 7 1. 2. 3 Scanning Technique . . . . . . . . . . . . . . . . . 7 1. 3 Sonographic Features of the Normal Spleen. . . . 7 1. 3. 1 Splenic Contour . . . . . . . . . . . . . . . . . . . 7 1. 3. 2 Echo Pattern of the Splenic Parenchyma. . . . . ."

Imaging of Gastrointestinal Tract Tumors describes current imaging practice for the most commonly encountered benign and malignant digestive tract tumors and gives a review of the literature for less frequent tumors. General features (anatomic data, frequency, clinical and biologic signs, treatment) are discussed for all pathologies prior to description of imaging techniques, which include barium studies, ultrasonography and angiography, and above all CT. MRI appears particularly indicated for esophageal carcinoma and pelvic recurrences of colorectal cancers. The book is divided into three main section - benign tumors, malignant tumors, and tumors with an indeterminate prognosis - reflecting the value of different imaging strategies as a function of a tumor's natural history. The thorough analysis of literature for both frequent and less common tumors allows global evaluation of the diagnostic possibilities of imaging techniques, making Imaging of Gastrointestinal Tract Tumors a reference work for all specialists concerned with digestive tract pathologies.

Owing to the anatomic complexity of the neck and the diver sity of pathologic entities affecting it, the cervical region has long been of great semiological interest. Physical examination is an easy means of evaluating the size and origin of a solitary cervical mass, yet valid interpretation can prove difficult when the normal morphology of the neck has been altered; excellent examples are patients with extensive fibrosis or scarring secondary to previous irradiation or surgery. Like wise, physical examination cannot assess the relations of a pathologic process to adjacent structures - e. g., invasion can not be distinguished from simple displacement -and it is un suitable for monitoring therapeutic efficacy, such as the re sponse of metastatic nodes to medical management. Between physical examination, which remains fundamental, and exploratory surgical procedures, which are often the only means of obtaining indispensable anatomic proof for diagno sis, lie a number of recent imaging techniques including com puted tomography and magnetic resonance imaging using surface coils that provide invaluable information for the in vestigation of cervical pathologies. Real-time ultrasonogra phy occupies a privileged position because of its noninvasive ness, rapidity, and reliability, especially when performed by a specially trained examiner."