PMC3825229_01
Initial CT showing retroperitoneal mass compressing on the right kidney.
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Fig1
Its serpentine venous drainage to the IVC magnified the suspicion of malignancy (Figure 1).
Histology of the retroperitoneal mass. (A) Atypical nuclei (10x magnification). (B) Spindle cells with atypical nuclei (100x magnification).
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Fig2
An ultrasound-guided biopsy of the right renal and left axillary lesions was performed which on histopathologic analysis showed atypical nuclei with spindle shaped cells (Figure 2).
Positive staining for estrogen receptor.
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Fig3
The lesion was also positive for estrogen and progesterone receptors (Figure 3).
PMC3825229_02