Prostatomegaly is a term used to generally describe enlargement of the prostate gland from whatever cause. Usually, the prostate is considered enlarged on imaging when its volume measures beyond 30 cc (mL).
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Terminology
The term prostatomegaly is often used interchangeably with benign prostatic hyperplasia (BPH). Strictly speaking though, prostatomegaly refers to any cause of prostatic enlargement of which BPH is a common cause.
Pathology
Prostatomegaly is a general descriptive term and causes are varied:
Prostate volume is significantly influenced by age, with one study of healthy caucasian participants showing a gradual increase of mean prostate volume from 24 to 38 mL between the age groups of 50-54 years and those over 75 years 2.
Associations
Radiographic features
The volume of the prostate can be estimated on ultrasound, CT and MRI with the ellipsoid formula 1 measuring each length in centimeters:
width x height x length x 0.523
The result is preferably expressed in milliliters (mL) although it is still common to see "cc (cubic centimeters)" used in reports.
Please see specific causes for further information.
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