esticular cancer forms when malignant (cancer) cells develop in the tissues of one or (less commonly) both testicles. Your testicles are two walnut-shaped sex glands that produce sperm and the hormone testosterone. They sit inside a sac of skin that lies below your penis called the scrotum.

Like any cancer, testicle cancer is a serious condition. Fortunately, testicular cancer is highly treatable and curable.

What are the types of testicular cancer?

About 90% of all testicular cancer arises from germ cells in your testicles that clump together to form a mass or tumor. Germ cells eventually develop into sperm. Two types of testicular cancer arise from germ cells.

Seminoma: Slow-growing cancer that primarily affects people in their 40s or 50s.

Non-seminoma: Cancer that grows more rapidly than seminomas. It mainly affects people in their late teens, 20s and early 30s. There are four types of non-seminoma tumors. Each is named after the type of germ cell that makes up the tumor. Non-seminoma tumors include embryonal carcinoma, yolk sac carcinoma, choriocarcinoma and teratoma.

Some testicular cancer tumors consist of both seminoma and non-seminoma cells.

What are the signs and symptoms of testicular cancer?

The most common sign of testicular cancer is a painless lump in your testicle. Other symptoms include:

• Swelling or sudden fluid build-up in your scrotum.
• A lump or swelling in either testicle.
• A feeling of heaviness in your scrotum.
• Dull ache in your groin or lower abdomen.
• Pain or discomfort in your scrotum or a testicle.
• A shrinking testicle (testicular atrophy).

What are the stages of testicular cancer?

Diagnosis also involves cancer staging. Staging provides important information that will guide treatment decisions, such as tumor size and whether the cancer’s spread.

Stage 0: Abnormal cells have developed but are still inside the testicles where sperm cells start to develop. Stage 0 is also called germ cell neoplasia in situ (GCNIS).
Stage I: Cancer is confined to the testicle, which may include nearby blood or lymph vessels. Tumor markers may or may not be elevated.
Stage II: Cancer has spread to the lymph nodes in the back of your abdomen (also called the retroperitoneum) but not anywhere else. If you have cancer in your lymph nodes along with moderately or highly elevated tumor markers, then you’re in stage III rather than stage II.
Stage III: Cancer has spread to lymph nodes beyond your abdomen or to an organ.

Surgery

Surgery to remove the cancerous testicle is the most common treatment for testicular cancer, regardless of cancer stage or tumor type. In some cases, your provider may also remove your lymph nodes.

• Radical inguinal orchiectomy
• Retroperitoneal lymph node dissection (RPLND)
• Radiation therapy
• Chemotherapy

Can testicular cancer be cured?

Testicular cancer is curable. While a cancer diagnosis is always serious, the good news about testicular cancer is that it is treated successfully in 95% of cases. If treated early, the cure rate rises to 98%.

Is testicular cancer fatal?

Testicular cancer can be fatal, but this is rare. Still, early detection makes a big difference in your prognosis. The earlier you see your provider and receive a diagnosis, the greater your chances of being cancer-free.