## **Core Concept**
The per rectal examination (also known as a digital rectal examination or DRE) is a common clinical procedure used to assess the rectum and surrounding structures. In adult males, several structures can be palpated anterior to the rectum during this examination. These typically include the prostate gland, seminal vesicles, and the urethra.

## **Why the Correct Answer is Right**
The correct answer, , refers to the structure that cannot be felt anteriorly during a per rectal examination in an adult male. Normally, the prostate gland can be palpated as it is located anterior to the rectum, enveloping the urethra. The seminal vesicles can sometimes be felt if they are enlarged. However, certain structures like the **testes** are not palpable during a rectal examination as they are located outside the pelvic cavity, within the scrotum.

## **Why Each Wrong Option is Incorrect**
- **Option A:** The **prostate gland** can indeed be felt anteriorly during a per rectal examination. It is a glandular structure that surrounds the urethra and is a key landmark in this exam.
- **Option B:** The **seminal vesicles** can sometimes be palpable if they are enlarged, making them relevant to the structures that can be felt during the examination.
- **Option D:** The **urethra** itself is not directly palpable but its position can be inferred by the examination, especially considering its relation to the prostate gland.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl from the per rectal examination is that it is not only useful for assessing rectal abnormalities but also for evaluating the prostate gland in men. An enlarged prostate or an irregularity in the prostate gland can be indicative of various conditions, including benign prostatic hyperplasia (BPH) or prostate cancer.

## **Correct Answer:** . **Epididymis/Testes**