| Additional Info: |
This specimen came from a 55 year-old man who presented with testicular swelling. Ultrasound demonstrated a solid testicular mass measuring 6.5 cm. Orchiectomy was performed. The tumor architecture is regionally variable, including glandular, papillary and solid areas. The cytology is high grade (see additional image), with indistinct cell borders and irregular, vesicular nuclei. Immunohistochemistry demonstrated that these cells were strongly positive for CD30, consistent with a diagnosis of embryonal carcinoma of the testes. |