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Metastatic-directed therapy using PSMA-PET/CT at PSA relapse.

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Androgen deprivation therapy (ADT) for prostate cancer causes side effects. Tailored metastasis-directed therapy using PSMA-PET/CT can prolong ADT-free survival, sparing patients from continuous treatment side effects.

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Area of Science:

  • Oncology
  • Nuclear Medicine
  • Radiation Oncology

Background:

  • Androgen deprivation therapy (ADT) is a standard treatment for prostate cancer, but its side effects negatively impact quality of life.
  • The optimal timing for initiating ADT during prostate-specific antigen (PSA) relapse remains unclear, particularly in patients with normal testosterone levels.

Observation:

  • A case involving a patient with prostate cancer who had a limited PSMA-avid lymph node detected via PET/CT.
  • The patient had normal testosterone levels at the time of PSA relapse.

Findings:

  • Metastasis-directed therapy, guided by PSMA-PET/CT, allowed for precise targeting of the detected metastasis.
  • This targeted approach successfully prolonged the patient's ADT-free survival.

Implications:

  • Highlights the value of advanced molecular imaging like PSMA-PET/CT in treatment decision-making.
  • Emphasizes the potential of metastasis-directed therapy to balance general versus tailored treatment strategies.
  • Demonstrates a method to spare patients from continuous ADT side effects by prolonging ADT-free survival.