Mr Dunn Is a 62-Year-Old Man Who Has Presented for a Routine

question 13

Multiple Choice

Mr. Dunn is a 62-year-old man who has presented for a routine annual examination. On examination of the prostate you note a hard, irregular, painless nodule and obliteration of the median sulcus. These are signs of:

• A) benign prostatic hypertrophy.
• B) cancer of the prostate.
• C) long-standing prostatitis.
• D) swelling as a result of aging.

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Definitions:

δ-hydroxyvaleric Acid

An organic compound that is structurally a hydroxylated form of valeric (pentanoic) acid, where the hydroxyl group is on the δ-carbon.

Compound

A substance made up of two or more different elements chemically bonded together.

Hydrogen-bonded Dimers

Pairs of molecules that are connected by hydrogen bonds, often observed in carboxylic acids and alcohols.

Molecular Weights

The sum of the atomic weights of all atoms in a molecule, representing the mass of a molecule relative to the unified atomic mass unit.