PMC3869917_01
(A) Preoperative magnetic resonance image; (B) pathologic section; (C) computed tomography (CT) re-examination at 9 months suggesting metastasis near the abdominal aorta; (D) CT re-examination at 18 months showing no enlarged lymph node near the abdominal aorta.
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One month prior to presenting, macroscopic hematuria appeared again, when MRI suggested a space-occupying lesion in the right renal pelvis (Figure 1A). Postoperative pathology reported MFH of the left kidney associated with renal-vein cancer embolus (Figure 1B). A bone ECT scan and plain thoraco-abdominal CT scan during a 9-month postoperative follow-up period showed a metastatic focus adjacent to the abdominal aorta (Figure 1C), whose CT value was similar to that of the primary tumor. CT scans at 12 and 18 months following the operation showed that the metastatic focus near the abdominal aorta had disappeared (Figure 1D).
Immunostaining for cluster of differentiation 68, S-100, and vimentin.. Note: Scale bar 20 mum.
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Immunohistochemistry showed vimentin (+) and cluster of differentiation (CD) 68 (+) (Figure 2). (All antibodies were purchased from Maixin Biotech [Fuzhou, People's Republic of China], and used at dilution 1:100).