Mr. Song, 66, began to enjoy his retirement three years ago, but his wife unexpectedly found his testicles one big and one small. After seeing a doctor, it was found to be renal cell carcinoma, but it recurred after operation. Fortunately, after new targeted drug treatment, the disease is now under stable control. Mr. Song, 66, usually has no bad hobbies. After retirement, he is happy to travel to the mountains with his wife. Unexpectedly, when he was changing clothes, his wife found his testicles one big and one small. After further medical examination, he found himself suffering from renal cell carcinoma. Mr. Song underwent surgery immediately, but it recurred and metastasized to the lungs. He went in and out of the operating room three times in three years, and then received new oral target drugs. At present, the tumor has shrunk and Mr. Song has recovered. Zhangyan Hua, a urologist at Taipei Veterans General Hospital, said that men will have a big testicle and a small testicle, mostly because of varicocele, because blood can't flow back, which will make one testicle bigger. As for Mr. Song, there will be one testicle big and one testicle small, which may block the left renal vein with cancer cells, resulting in the blood of the inferior spermatic vein not flowing back. Dr. Xie Ruikun, chairman of Taiwan Province Cancer Holistic Care Foundation, a consortium legal person, pointed out that renal cancer is more common in middle-aged and elderly people over 40 years old, and the incidence rate of male is twice that of female. According to statistics, there are nearly 1,000 patients with renal cell carcinoma in Taiwan Province, 90% of whom are renal cell carcinoma. Dr. Xie Ruikun said that in recent years, targeted drugs have significantly improved the survival time of cancer patients, but there are often side effects such as hand-foot syndrome and stomatitis. As for the new targeted drugs, it can really reduce the related side effects, and with medical insurance coverage, it can give patients with renal cancer one more choice. Subscribe to the health Aloha audio-visual channel, read health knowledge more easily, and pay attention to your health every day! Line @ ID: @:/cancer/article/5641/Testis one big and one small is actually renal cell carcinoma Key words: testis, targeted drugs, renal cell carcinoma.