PMC6689546_01
Upper row, transaxial cranial MR T2 weighted images demonstrating intraventricular cavernous malformation in the right lateral ventricle (white arrow). Note the increase in size over the course of 13 months. Upper row image to the right, transaxial cranial MR susceptibility-weighted image with microbleeding of the lesion. Lower row, coronal cranial MR T1-weighted and contrast-enhanced image demonstrating the cavernous malformation adjacent to the floor of the right lateral ventricle (short white arrow). The postoperative image demonstrates the total resection of the lesion. Note the small defect in the surrounding brain parenchyma caused by the endoscopic approach (arrowhead).
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In follow-up cranial MR imaging, a cavernous malformation located in the right lateral ventricle had occurred about two years ago and demonstrated not only an increasing size but also microbleeding (Figure 1, upper row). Postoperative MR imaging demonstrated a complete resection (Figure 1, lower row).