case_images: PMC3643361_01
case_images: Polygonal cells with abundant pale cytoplasm with anisonucleosis, increased nuclear cytoplasmic ratio, overlapping nuclei and irregular nuclear contours (Diff Quik stain, x400)
case_images: JCytol-30-42-g001.jpg
case_images: PMC3643361_01_JCytol-30-42-g001.jpg
case_images: F1
case_images: Polygonal cells with abundant pale cytoplasm exhibited anisonucleosis, increased nuclear cytoplasmic ratio, overlapping nuclei and irregular nuclear contours [Figure 1].
case_images: Hyaline stalks with overlying spindle cell with elongated oval nuclei and scant cytoplasm (Diff Quik stain, x200)
case_images: JCytol-30-42-g002.jpg
case_images: PMC3643361_01_JCytol-30-42-g002.jpg
case_images: F2
case_images: Spindle cells with elongated oval nuclei and scant cytoplasm surrounded metachromatic hyaline globules and hyaline stalks [Figures 2 and 3].
case_images: Metachromatic hyaline globules (Diff Quik stain, x400)
case_images: JCytol-30-42-g003.jpg
case_images: PMC3643361_01_JCytol-30-42-g003.jpg
case_images: F3
case_images: Spindle cells with elongated oval nuclei and scant cytoplasm surrounded metachromatic hyaline globules and hyaline stalks [Figures 2 and 3].
case_images: Cell block showing anastomosing papillary cores lined by plump endothelial cells and attenuated endothelial cells overlying hyalinized cores (H and E, x200)
case_images: JCytol-30-42-g004.jpg
case_images: PMC3643361_01_JCytol-30-42-g004.jpg
case_images: F4
case_images: Subsequent cell block showed characteristic features of IVPEH characterized by papillary cores lined by plump endothelial cells, adjacent to small delicate papillae [Figure 4].
case_images: Factor VIII immunostain outlined the endothelial cells in cell block sections (IHC, x200)
case_images: JCytol-30-42-g005.jpg
case_images: PMC3643361_01_JCytol-30-42-g005.jpg
case_images: F5
case_images: Immunohistochemical stains for factor VIII and CD34 performed on the cell block material outlined the endothelial cells [Figure 5].
case_images: Histological section of resected tumor showing numerous areas of endothelial ingrowths and delicate papillae with hyalinized cores covered by attenuated endothelial cells (H and E, x200)
case_images: JCytol-30-42-g006.jpg
case_images: PMC3643361_01_JCytol-30-42-g006.jpg
case_images: F6
case_images: The characteristic features of IVPEH with numerous areas of endothelial ingrowths and delicate papillae with hyalinized cores covered by attenuated endothelial cells as noted in cell block sections were seen [Figure 6].