Terminally ill man says he saved his twin with a blood test

A Portsmouth man diagnosed with advanced prostate cancer in 2020 says he persuaded his twin to have a PSA blood test in 2025, which led to an early-stage, operable diagnosis.

A man from Portsmouth who was diagnosed with advanced prostate cancer in 2020 says he encouraged his twin brother to take a PSA blood test in 2025. The man, Andy Gissing, is described as a sailing instructor and RNLI volunteer. He reports that his brother's test led to a diagnosis of early-stage prostate cancer that was still operable. The account focuses on the brothers' experience and the timing of the tests. Key facts: - Andy Gissing was diagnosed with prostate cancer in 2020 and the disease was advanced by that time. - In 2025 his twin brother agreed to a PSA blood test and was diagnosed with early-stage, operable prostate cancer. - Andy is identified as a sailing instructor and RNLI volunteer from Portsmouth and is reported as having urged his brother to be tested. Summary: The article reports that Andy Gissing, living with advanced prostate cancer, says his insistence on a PSA test led to an early diagnosis for his twin. Undetermined at this time.