Fig. 2

Histopathological and immunohistochemical features of the renal tumor. a, b Nested eosinophilic tumor cells (a) and non-cohesive tumor cells (b) with abundant pink cytoplasm and eosinophilic intracytoplasmic inclusions (H&E staining, 400X magnification). c, d, e, f Neoplastic cells in both organoid and non-adhesive areas demonstrated strong nuclear staining of TFE3 (c, d) and negative staining of INI1 (e, f) (400X magnification). g, h, i, j All tumor cells showed strong positive staining for vimentin (g, h) and pan-CK (i, j) with prominent perinuclear and cytoplasmic staining in non-adhesive area (400X magnification)