[citation needed] The macroscopic appearance of the tumour is of a mutinodular grey-white to tan coloured mass with gelatinous, haemorrhagic and necrotic areas.

The intratubular growth probably accounts for the appearance of separate tumour nodules within the testis.

Immunostaining for most of the usual testicular germ cell tumour markers is negative (i.e. placental alkaline phosphatase (PLAP), vimentin, actin, desmin, alpha fetoprotein (AFP), OCT4, human chorionic gonadotropin (hCG), and carcinoembryonic antigen (CEA)).

[3] It has not been described as arising in locations outside the testis, and does not occur in association with other germ cell tumours.

[1] Unlike classical seminoma, spermatocytic tumors rarely metastasise, so radical orchidectomy alone is sufficient treatment, and retroperitoneal lymph node dissection and adjuvant chemotherapy or radiotherapy are generally not required.