What should you know about spermatocytic seminoma?

This tumour develops from germ cells, the cells involved in making sperm. It is distinct from the more common classic seminoma and is usually considered separately when a pathology specialist examines tissue. A painless change in the size, shape or firmness of a testicle can prompt assessment, although symptoms alone cannot identify the tumour type.

An ultrasound can show a testicular mass, while blood tests and scans help the care team understand the wider picture. The diagnosis is confirmed from tissue removed during surgery rather than from symptoms or an ultrasound alone.

Arrange a prompt appointment with a urologist if a testicular lump or persistent change has been noticed. Do not try to diagnose the mass by checking it repeatedly. Your team may discuss removal of the affected testicle as both a diagnostic and treatment step; this is called [Tumour Removal Surgery](/treatments/surgical-oncology/tumour-removal-surgery/). Further treatment depends on the pathology findings and staging. Some people need monitoring, while others may be offered [Chemotherapy](/treatments/systemic-therapy/chemotherapy/).

Seek medical review promptly for a new testicular lump, enlargement, heaviness or persistent ache. Attend urgent care for sudden severe testicular pain, marked swelling, nausea or vomiting, because these symptoms can also signal a time-sensitive problem unrelated to cancer. After treatment, report new swelling, pain or a change in the remaining testicle rather than waiting for a routine appointment.

Ask which findings support the diagnosis, whether the tumour appears confined to the testicle, what surgery would involve, how fertility and hormone production may be affected, and whether monitoring or additional treatment is advised.