January 18, 2024
Breathing by Dr. Huang Qiongying
The cardiologist called: “Grandpa Chen has heart disease. During a routine examination, he found a shadow at the top of the right lung, 2 centimeters in size. The positron emission tomography (PET-CT) report showed said it was mostly tumors. Please prepare for “A bronchoscopy. His heart function has worsened and he cannot tolerate major surgery. He needs a diagnosis as soon as possible so that the oncologist can organize appropriate treatment.” The bronchoscopy found no tumor cells, only a slight inflammatory reaction, and the nucleic acid test found the tuberculosis gene , so I told the cardiologist doctor, Grandpa Chen has tuberculosis and needs to take tuberculosis medicine. The cardiologist was shocked: “The PET-CT report is clearly a tumor, could it be a false negative?” tuberculosis is not under control, so he is not suitable for any chemotherapy for lung cancer. Treat tuberculosis first!”
The cardiologist was under enormous pressure from his family and feared that this would delay Grandpa Chen’s treatment of the “tumor”, so he contacted the radiologist and discussed using computer scan guidance to extract Shadow lung tissue through a skin prick for testing. he said the shadow was blocked by bones and large blood vessels, making it technically impossible. I suggested checking it again after two months, using magnetic navigation and intratracheal ultrasound to increase accuracy. Follow-up results two months later still showed no tumor cells. Six months later, x-rays of his lungs showed slight improvement. After completing 9 months of tuberculosis drug treatment, Grandpa Chen underwent another positron scan, which confirmed that the shadows on his lungs had reduced, his metabolic rate had decreased significantly and there was cancer. Only the scars of tuberculosis remained. The cardiology department can breathe a sigh of relief.
PET-CT is used to diagnose cancer and other diseases. For example, after diagnosis of lung cancer, we can use PET-CT to define the stage. The method involves injecting glucose with radioactive isotopes. Glucose will be absorbed by the body’s cells and concentrated in areas with particularly fast metabolism. By scanning the signals emitted by the radioactive isotopes, it will be possible to identify the location of the tumor. By measuring the absorption value (SUV) of radioactive isotopes, it is assumed that the absorption value of pathogens, such as scars, is very low or even equal to 0, the absorption value of malignant tumors is very high and the absorption is at an average level is a gray area… (continue)
The author is a respiratory system specialist
[信健康] Is there a true or false diagnosis of cancer? Doctor information comes to the rescue! 【More health information: Health.hkej.com】
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