PMC3796445_01
CT scan of the pelvis showing heterogeneously enhancing mass replacing the prostate infiltrating the bladder base and Foley's bulb and catheter in situ.
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figure1
A computed tomography (CT) scan of the abdomen and pelvis revealed a 9 x 7 x 6.5 cm3 heterogeneously enhancing mass replacing the prostate with infiltration to the bladder base reaching inferiorly up to the left ischiorectal fossa (Figure 1).
Hematoxylin and eosin (H & E) stained image showing sheets of cells having hyperchromatic nuclei at 10x magnification.
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A needle biopsy from the prostate showed sheets of cells having a moderate amount of eosinophilic cytoplasm and hyperchromatic nuclei (Figures 2 and 3).
H & E stained image showing sheets of cells having moderate amount of eosinophilic cytoplasm and hyperchromatic nuclei at 40x magnification.
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A needle biopsy from the prostate showed sheets of cells having a moderate amount of eosinophilic cytoplasm and hyperchromatic nuclei (Figures 2 and 3).
Immunohistochemistry 40x image showing desmin positivity.
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On immunohistochemistry, the tissue specimen was positive for desmin and myogenin (Figures 4 and 5) and negative for cytokeratin and leucocyte common antigen (CD45), suggestive of embryonal RMS.
Immunohistochemistry 40x image showing myogenin positivity.
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figure5
On immunohistochemistry, the tissue specimen was positive for desmin and myogenin (Figures 4 and 5) and negative for cytokeratin and leucocyte common antigen (CD45), suggestive of embryonal RMS.