PMC3649610_01
Testis was enlarged and almost completely replaced by tumor with whitish firm cut surface. Small portion of residual normal testis was also seen
IJU-29-77-g001.jpg
PMC3649610_01_IJU-29-77-g001.jpg
F1
The testis was almost completely replaced by tumor with a small portion of residual normal testis [Figure 1].
Primary intratesticular rhabdomyosarcoma: H and E stain: (a) and (b) Highly cellular tumor composed of pleomorphic cells including round to spindle, strap-like cells. Mitotic figures were seen (x100), (c) Racquet-shaped rhabdomyoblast showed abundant granular eosinophilic cytoplasm, eccentrically situated large vesicular nucleus with prominent nucleoli (x400). Immunohistochemistry showed desmin (d) and myogenin (e) positivity in tumor cells (x100)
IJU-29-77-g002.jpg
PMC3649610_01_IJU-29-77-g002.jpg
F2
Mitotic figures were frequently observed [Figures 2a-c]. Immunohistochemistry showed positive results for vimentin, desmin and myogenin [Figure 2d, e] while negative for alpha-smooth muscle actin, placental alkaline phosphatase (PLAP), CD-117, S-100, cytokeratin, and epithelial membrane antigen.