PMC4347964_01
Two lesions on left kidney. One is originating from cortical region and growing trough perirenal fat tissue (arrowheads) while the other one is in the parenchyma having nodular growth through perirenal fat tissue (arrow).
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One of them (Fig. 1) was 3 x 1 cm in dimensions, originating from cortical region and growing trough perirenal fat tissue. Other lesion (Figs. 1 and 2) was a heterogeneous solid mass with the dimensions of 4 x 2 x 2 cm, in the parenchyma and it was having nodular growth through perirenal fat tissue (Figs. 1 and 2).
The lesion located in the parenchyma having nodular growth through perirenal fat tissue (arrow).
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Other lesion (Figs. 1 and 2) was a heterogeneous solid mass with the dimensions of 4 x 2 x 2 cm, in the parenchyma and it was having nodular growth through perirenal fat tissue (Figs. 1 and 2).
Basophilic mixoid areas on right upper and lateral sides with lipomatous areas (HE x 10).
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In pathological evaluation, the biopsy material of the cortical mass was a tumoral lesion containing lipomatous and mixoid areas without atypia, mitosis or necrosis which was diagnosed as myxolipoma (Fig. 3) while the diagnosis of other parenchymal lesion was renal cell carcinoma of clear cell type.