Transrectal ultrasonography
Transrectal ultrasonography (pronounced as trans-rect-al ultra-son-og-raphy) is a medical imaging procedure that uses sound waves to create images of the rectum and nearby structures.
Etymology
The term "transrectal ultrasonography" is derived from the Latin word "trans" meaning "across", "rectum" referring to the final section of the large intestine, and "ultrasonography" which is a combination of the Latin word "ultra" meaning "beyond", and the Greek words "sonos" meaning "sound" and "graphia" meaning "writing".
Procedure
In a transrectal ultrasonography, a small, lubricated probe is inserted into the rectum. This probe emits sound waves that bounce off body tissues to create echoes. The probe then receives these echoes, which are turned into images by a computer. The procedure is commonly used to examine the prostate gland in men and the rectum in both men and women.
Related Terms
- Ultrasound: A type of imaging that uses high-frequency sound waves to look at organs and structures inside the body.
- Rectum: The final section of the large intestine, terminating at the anus.
- Prostate gland: A gland surrounding the neck of the bladder in male mammals and releasing prostatic fluid.
Uses
Transrectal ultrasonography is often used to diagnose conditions affecting the rectum and nearby structures, such as:
- Prostate cancer: A form of cancer that develops in the prostate, a gland in the male reproductive system.
- Rectal cancer: A type of cancer that begins in the rectum.
- Benign prostatic hyperplasia: An enlarged prostate gland that can cause difficulties in urination.
Risks
As with any medical procedure, transrectal ultrasonography carries some risks, including the potential for infection or bleeding. However, these risks are generally low.
External links
- Medical encyclopedia article on Transrectal ultrasonography
- Wikipedia's article - Transrectal ultrasonography
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