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We report the case of a 52-year-old man in whom multiple conglomerated ring-enhanced lesions in the left frontal lobe were revealed on magnetic resonance imaging (MRI); further, he presented with headache. Subtotal resection of the mass was performed and the histopathological diagnosis of gemistocytic astrocytoma was made. He received postoperative radiotherapy of remnant mass. Six months post-surgery, new multiple lesions were developed on the left cerebellum and the lesion yielded radiological findings that were quite similar to those of the lesion previously observed in the left frontal lobe. Total resection was performed with the aid of neuronavigation and a live yellow 10-cm-long worm with an active scolex was found. A pathologist identified the worm as a sparganum of Spirometra mansoni. This suggests that the live worm may have moved to the ipsilateral cerebellum due to the stimulus from the surgery and radiation on the frontal lobe. Although this case presented characteristic MRI findings of sparganosis, we did not conduct a serological test; therefore, we misdiagnosed sparganosis as gemistocytic astrocytoma. To the best of our knowledge, this is the first report of the ipsilateral transtentorial migration of cerebral sparganosis.
To compare the linear dimensions (width) of the foetal atrium and occipital horns to their areas, 31 foetuses (15–24 weeks, C-R 12.5–23.5 mm) from spontaneous abortions were evaluated. Images of the axial sections of the brains were transferred to computer and Scion for Windows 98 software was used for image analysis. 11 brains appeared normal and 20 were abnormal (leukomalacia in 9 cases, periventricular and intraventricular haemorrhage in 6 cases, ventriculomegaly in 3 cases, colpocephaly in 1 case, vascular malformation in 1 case). High-range linear and planar asymmetries in the atrium and occipital horns were observed both in normal and abnormal brains. There was no close correlation between the width and the area of the structures under investigation, although it was stronger in case of the occipital horns. The wider occipital horns and atria often had a smaller area than the narrower ones. Some abnormal cerebral hemispheres had relatively narrow atria and occipital horns in comparison with their large areas. Further investigation should be carried out to assess the utility and potential superiority of planar measurements over linear in the image diagnosis of foetal ventricles.
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