From the extensive statistics concerning treatment results of urological tumours which are available from central tumour registers, a first draft of a treatment plan has been worked out, which is based on tumour spread. Since the extent of tumour invasion is documented by the TNM system of the UICC, one is justified in speaking of TNM orientated treatment planning. For planning it is necessary to consider not only tumour type and depth of infiltration of local tissues, but also the lymph node anatomy, whether the nodes are involved or not. Computer tomography assist significantly in the performance of such TNM orientated treatment planning, particularly in determining the extent of the volume to be irradiated, It must be stressed that computer tomography does not replace the use of simulators, but that it is a valuable addition. In our view, computer tomography has also an undoubted value in treatment planning of urological tumours where palliation only is the aim. It provides the possibility of checking the effect of the chosen treatment by a non-invasive diagnostic method.
The authors present the case history of a child with neuroblastoma and early infiltration of the orbit accompanied by bilateral blindness. The typical clinical signs developed later. The thickening of the periosteum infiltrated by the tumor in the lateral wall of the orbit was demonstrated by computerized tomography. This may be regarded as an early sign of infiltration of the orbit by the neuroblastoma. In the case reported here a severe inflammatory reaction developed in the left orbit and anterior segment during massive chemotherapy and melted the cornea.
The pre- and postcontrast CT findings of 11 patients with lymphoma involving the kidneys are described. In all cases the renal lesions showed low attenuation values after bolusinjection. In contrary to the literature renal lymphoma might present different attenuation values in the non-contrast enhanced CT scan. The density varies from hypo- to iso- and hyperdens. A bolusinjection of contrast media should be performed to depict even greater nodules.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.