PMC9149303_01
Image at admission. CT image (A), MR T1 image (B), MR T2 image (C), and MR T1-weighted image (D).
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F1
Cranial computed tomography (Figure 1A) showed a circular focus of low density beside the left lateral ventricle. The lesion appeared hypointense on T1-weighted imaging and hyperintense on T2-weighted imaging, and rim enhancement was seen on postcontrast T1-weighted imaging (Figures 1B-D).
Preoperative CT reexamination (A), postoperative CT (B), intraoperative cystic fluid aspiration (C), and intraoperative specimen (D).
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F2
Cranial computed tomography (Figure 2A) demonstrated that the intracranial cystic metastasis had progressed compared with the previous case. A total of 13 ml of yellow viscous liquid (Figure 2D) was drawn during the operation. Postoperative computed tomography (Figure 2B) showed that the lesion had almost disappeared, and his right muscle strength had recovered.
CT image showing fluid reaccumulation (A). CT image immediately after aspiration via the OR (B), CT image after first radiosurgery (C), and final imaging follow-up (D).
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F3
The patient underwent cyst aspiration (Figure 3C) and OR implantation under neuronavigation. The cyst immediately (Figure 3A) returned, with a progressive decline in contralateral limb muscle strength. We promptly implemented cystic fluid aspiration (Figure 3B), and the patient's symptoms were relieved. We performed SBRT again approximately half a year later (Figure 3C). The patient's last radiographic follow-up was 14 months after onset (Figure 3D).