PMC8769488_01
(A) Preoperative axial (left) and coronal (right) T1-weighted magnetic resonance (MR) images after the administration of contrast media showing the presence of a lesion in the left lateral ventricle. (B) CT immediately after tumor resection showed no hemorrhagic complications or postoperative acute hydrocephalus but trapped air in the frontal area was present. (C) Axial (left) and coronal (right) T1-weighted MRI 8 hr after the operation after the administration of contrast media showing the residual lesion (arrow) and the absence of postoperative acute hydrocephalus. (D) CT 14 hr after the operation showing enlargement of the lateral ventricle and central trans-tentorial herniation.
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F1
T1-weighted magnetic resonance (MR) images after administration of contrast media revealed a mass lesion that was 40 mm maximal in diameter in the left lateral ventricle (Fig. 1A). Mild thinning of the corpus callosum, especially in the posterior body of the corpus callosum, and obstructive hydrocephalus were noted (Figs. 1A and 2A).
Serial sagittal magnetic resonance images showing the preoperative corpus callosum (arrows, thinning of the posterior body of the corpus callosum) (A) and signal changes and subsequent corpus callosum appearance at 8 hr after the tumor resection (arrowheads, signal changes of the corpus callosum; arrow, moderate effacement of the basal cistern) (B) and 3 days (C) and 25 days (D) after tumor resection. This finding was improved at 41 days (arrows in C-E, signal changes and swelling of the corpus callosum) (E) after the operation and disappeared completely with thinning of the corpus callosum after 2 years (arrow, atrophy of the posterior body of the corpus callosum) (F).
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F2
Mild thinning of the corpus callosum, especially in the posterior body of the corpus callosum, and obstructive hydrocephalus were noted (Figs. 1A and 2A).