PMC4533493_01
Magnetic resonance imaging shows a well-defined, enhanced mass with a cauliflower shape and internal papillary structures in the inferior horn of the right lateral ventricle (Upper, left: axial T1-weighted image, right: gadolinium (Gd)-enhanced image. Lower, left: sagittal Gd-enhanced image, right: axial T2-weighted image).
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F1
Magnetic resonance imaging (MRI) also showed a well-defined, enhanced mass with a cauliflower shape and internal papillary structures in the inferior horn of the right lateral ventricle (Fig. 1).
Time-dependent change of the amount of external ventricular drainage (EVD) and electrolytes of serum sodium, potassium and chloride after cerebral ventricular drainage (CVD). Upper line graph demonstrates over-drainage of cerebrospinal fluid and instability of the amount after CVD. Over-drainage improved after tumor removal. Lower panels showed marked change of serum sodium (Na), potassium (K) and chloride (Cl), and changes of water balance (WB), body weight (BW). Vomiting + shows grade of slight and ++ shows moderately severe. The unstable electrolytes were also corrected after tumor removal.
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F2
The amount of CSF drainage varied between 840 mL/day and 1,520 mL/day under constant pressure, serum sodium was in the range of 117-137 mmol/L and potassium was in the range of 2.2-6.9 mmol/L for 6 days after drainage (Fig. 2).
Microscopic photograph of hematoxylin-eosin staining of a pathological specimen shows tumor cells arranged in papillary structures (x100. Bar, 200 mum).
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F3
Pathological examination revealed it to be a choroid plexus papilloma (Fig. 3).
Postoperative magnetic resonance imaging shows no remnant enhancing mass in the inferior horn of the right lateral ventricle (Upper, left: axial T1-weighted image, right: gadolinium (Gd)-enhanced image. Lower, left: sagittal Gd-enhanced image, right: axial T2-weighted image).
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F4
Postoperative MRI demonstrated total removal of the lesion (Fig. 4).