title: [Isotopic cisternography in detection of CSF Rhinorrhea (author's transl)].
abstract: The radioisotope cisternogram has proven itself to be a valuable diagnostic procedure during the evaluation of patients with cerebrospinal fluid (CSF) rhinorrhea. If it is not possible to define the origin of such a leak, extensive intracranial explorations may be required, which may or may not result in successful correction of the defect. As a functional examination with limited risk to the patient and minimal radiation exposure, the isotopic cisternogram can either establish a diagnosis of CSF rhinorrhea or eliminate cerebrospinal fluid as a cause for rhinorrhea. When occurring, CSF leaks can be shown by demonstrating a "path" from the cranial fossage into the nasal cavity. The present technique utilizes tampons placed in each nostril. A positive diagnosis of CSF rhinorrhea is made by finding a tampon impregnated with at least twice the radioactivity of a control tampon from the opposite nostril (in the presence of an intact septum). Conclusions indicate that a positive anterior fossa cisternogram may be the only evidence for hidden site of CSF leakage, especially when other signs are lacking.
mesh_terms: D000328:Adult; D002559:Cerebrospinal Fluid Rhinorrhea / Q000145:classification / Q000175:diagnosis*; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging / Q000379:methods; D014054:Tomography
vernacular_title: Die szintigraphische Lokalisationsdiagnostik von Liquorfisteln mit 169Ytterbium-DTPA