Penile fibrosarcoma tumor in a bull

Document Type: Scientific report

Authors

1 Department of Pathology, Faculty of Specialized Veterinary Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran

2 Department of Clinical Sciences, Faculty of Specialized Veterinary Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran

3 DMV Student, Faculty of Specialized Veterinary Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran

Abstract

This is a report of a penile fibrosarcoma in a two-year-old crossbred Holstein bull. The ulcerated tumor
mass with dimensions of 7 × 9 × 6.5 cm, was enveloped the glans and body of the penis. It had a white-gray
color at cross section appearance. There was no metastatic evidence of regional lymph node enlargement.
Histopathologically, elongated spindle-shaped cells arranged densely in the interwoven pattern had a low rate
of mitosis with oddly-shaped nuclei and pleomorphism. Immunohistochemically, the neoplastic cells were
positive for vimentin and S100, but negative for α-smooth muscle actin, desmin, C-KIT and GFAP.

Keywords