Classic seminoma: what the diagnosis means

Ultrasound usually identifies a solid mass inside the testis. Blood tumour markers and scans help with staging, while the pathology report confirms whether the tumour is pure seminoma and records features that guide follow-up.

Under the microscope, classic seminoma is typically made of fairly uniform germ cells separated by fibrous bands containing immune cells. Immunohistochemistry can support germ cell differentiation and distinguish seminoma from non-seminomatous tumours. The report also addresses tumour size, extension into nearby structures, blood-vessel or lymphatic invasion, and the spermatic-cord margin.

Alpha-fetoprotein should not be raised by pure seminoma. If it is elevated, the team investigates for a non-seminomatous component even when the sampled tissue resembles seminoma. Beta-human chorionic gonadotropin can rise in seminoma, and lactate dehydrogenase may contribute to the overall assessment. Marker trends are interpreted with imaging rather than in isolation.

The usual first treatment for a suspicious testicular tumour is removal of the testicle through an incision in the groin. A biopsy through the scrotum is generally avoided because it can disrupt normal drainage pathways. After surgery, choices depend on stage and may include structured surveillance or additional treatment. Chemotherapy is used for some stages or if disease returns; surgery may have selected roles for residual or recurrent disease. Before treatment, discuss sperm banking, testosterone, fertility goals, and whether a testicular prosthesis is wanted.

Seminoma commonly presents as a testicular lump, enlargement, firmness, or a feeling of heaviness without tenderness. Any new testicular change should be examined promptly, even without pain. Sudden severe testicular pain, rapid swelling, nausea, or a high-riding testicle can signal torsion, which is an emergency because blood flow may be interrupted. During treatment, urgent contact with the oncology team is appropriate for fever, breathing difficulty, uncontrolled vomiting, or marked weakness.

Ask whether the pathology showed pure seminoma, whether it extended beyond the testis, and what the tumour markers did after surgery. Request a clear explanation of the stage, the benefits and burdens of surveillance versus further treatment, the scan and marker schedule, fertility preservation, testosterone monitoring, and whom to contact between appointments.