[Misinterpretation of the adhesio interthalamica and the commissura epithalamica (posterior) in occlusive hydrocephalus in the computed tomogram].
As a cause of an occlusive hydrocephalus, sometimes by CT a cystic malformation of the third ventricle is falsely assumed. This misinterpretation is based on the enlargement of the ventricular system, which leads to an unusual visualization of the interthalamic adhesion and the epithalamic (posterior) commissure. We show these structures to be the reason for the misleading diagnosis by comparing anatomical sections, ventriculography and magnetic resonance imaging (MR) with each other. Finally we discuss the clinical significance by presenting cases, in which an operative treatment of the so called "cyst" already had been planned. For the definite diagnosis we favor MR.
Hussein
S
S
Neurochirurgische Klinik, Medizinische Hochschule Hannover.
Becker
H
H
D014695:Cerebral Ventriculography; D003560:Cysts / Q000150:complications* / Q000000981:diagnostic imaging; D003951:Diagnostic Errors; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging / Q000209:etiology*; D013788:Thalamus / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
Fehlinterpretation der Adhaesio interthalamica und der Commissura epithalamica (posterior) beim Hydrocephalus occlusus im Computertomogramm.