By M. Schneider, A. Thyss (auth.), Dr. Jean-Noel Bruneton, Prof. Dr. Maurice Schneider (eds.)
Computerization of the radiological photo (digitization, com puted tomography), the diagnostic contributions of extremely sonography, and the appearance of magnetic resonance imaging all usher in a brand new period in radiology. whereas this self-discipline keeps its medical nature, and maintains to staff jointly a variety of specialities, the technical "common denominator" performs an more and more vital position, and calls for a extra international ap proach to the scientific challenge. Centralization of state of the art gear in technical imaging facilities - strategic issues in destiny hospitals - will al low medical radiologists to accomplish all the examinations re quired for prognosis and follow-up with a excessive measure of reli skill, below optimal safeguard, and on the lowest attainable rate. this can be the correct second to post this treatise, as we start to use this new method of radiological stories. For reasons of readability, the lymphomatous methods were handled by way of anatomical situation; extra very important, notwithstanding, is the dialogue of the a number of points of analysis, with specific emphasis on fresh noninvasive modalities (characteristic visceral lesions ; research and characterization of the anatomical and tissue parts of those lesions with the top attainable measure of precision; nearby disorder ex pressure and anatomical gains; info on concomitant local involvement and far away sites), permitting number of acceptable remedy and surveillance strategies.
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Complementary studies depend on the clinical context (degree of neurosurgical urgency, localizing signs of the lesion) and whether or not bone lesions are detected on standard spinal films. Supplementary information can be obtained by CT. of the spine, myelography with iodized oil (Lipiodol) or metrizamide (Amipaque), and gas myelography. When lesions are demonstrated clinically or radiologically, CT should be performed first, since scans generally suffice for decisions as to the advisability of neurosurgery or radiotherapy.
NHL of the cavum Lymphomas of the Face and Neck 33 helpful in such cases to delineate tumor size and to assess response to treatment. The frequency of associated retroperitoneal involvement underlines the importance of CT exploration of the thorax and abdomen [28, 74). Likewise, the risk of intranodal recurrence justifies both gastrointestinal studies and scintigraphy aimed at detecting any bone involvement. 2 Facial Structures Fig. 3. NHL of the nasopharynx The facial structures are the second most frequent site of NHL after Waldeyer's ring, representing 7%-30% of NHL sites [74, 93, 403].
Cervical node manifestations constitute the only clinical form of cervicofacial HD, owing to the extreme rarity of extranodal cervicofacial HD sites . Clinical examination generally suffices for the detection and diagnosis of cervical adenopathies. Moreover, the therapeutic strategy does not depend on determination of the number of Fig. 12. Primary NHL of the parotid gland: infiltrative pattern Lymphomas of the Face and Neck nodes involved, in contrast to nodal metastases of head and neck cancers, for which precise anatomical data are essential [80, 408, 409].