Non-Germ Cell Tumors

These tumors arise from testicular structures unrelated to germ cell formation.

Gonadal Stromal Tumors

  • Develop from connective and supportive tissues in the testis.
  • Subtypes:
    • Leydig cell tumor: Usually benign; may cause hormonal imbalances (e.g., gynecomastia).
    • Sertoli cell tumor: Often benign and rarely hormonally active.

Lymphomas

  • Most common in older men.
  • Secondary involvement of the testis by malignant lymphomas (e.g., non-Hodgkin lymphoma).

Rare Tumors

  • Granulosa cell tumor: Rare, typically benign.
  • Fibromas and other mesenchymal tumors.
  1. Secondary Tumors
  • Metastases from other cancers (e.g., prostate, lung, or stomach carcinoma) in the testis.
  • Rare compared to primary testicular tumors.

Diagnosis and Treatment

  • Diagnosis:
    • Ultrasound, tumor markers (e.g., AFP, β-HCG, LDH), and histological examination following orchiectomy.
  • Treatment:
    • Depends on tumor type and stage: surgery, chemotherapy, or radiation therapy.

Testosterone Therapy After Treatment

In cases where hormone production from the remaining testis is insufficient, or both testes are removed (bilateral orchiectomy), testosterone replacement therapy (TRT) may be considered. Here’s a summary by tumor type:

Tumor Types and Testosterone Therapy

Germ Cell Tumors (Seminoma and Non-Seminomas)

  • Post-Treatment TRT:
    • After successful treatment (e.g., orchiectomy, chemotherapy), TRT may be provided if there is hormonal deficiency.
    • No increased risk of tumor recurrence with TRT when the tumor is fully removed and no active disease remains.
    • TRT is often needed in cases of bilateral orchiectomy.

Non-Germ Cell Tumors

  • Leydig Cell Tumor:
    • Often hormonally active and can produce testosterone. After tumor removal, remaining hormone production may suffice.
    • If deficiency arises post-treatment, TRT is possible.
  • Sertoli Cell Tumor:
    • Rarely hormonally active. If testosterone deficiency occurs after removal, TRT may be initiated.

Lymphomas

  • Testicular involvement often requires orchiectomy.
  • TRT can be provided for testosterone deficiency, provided the primary disease is under control.

Mixed Tumors

  • Similar to other germ cell tumors: TRT is safe after full remission.

Precautions

  1. Active Disease:
    • TRT is generally avoided during active tumor treatment, as testosterone might potentially stimulate growth in hormone-dependent tumors (though this is rare in germ cell tumors).
  2. Metastases or Recurrence:
    • TRT should only begin after complete remission.
  3. Hormone-Producing Tumors:
    • In tumors like Leydig cell tumors that naturally produce hormones, TRT should be approached with caution to avoid exacerbating hormone excess.

Conditions for Testosterone Therapy

  • Confirmed Hypogonadism: Verified through blood tests showing low testosterone.
  • Complete Remission: No active tumor or recurrence.
  • Regular Monitoring: Ongoing follow-ups to ensure the tumor does not return.

If these conditions are met, TRT can significantly improve quality of life by enhancing libido, muscle mass, and energy levels.