What does "#21 French cystoscope" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
A "#21 French cystoscope" is a medical tool used by doctors to examine the inside of a person's bladder. The number "21 French" refers to the size of the cystoscope, with "French" being a unit of measurement often used in medicine. The higher the number, the larger the diameter of the instrument. A cystoscope is typically inserted through the urethra and allows doctors to diagnose, monitor, and treat conditions affecting the bladder.
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