## Core Concept
Carcinoma of the prostate is a common malignancy in men, and its management and characteristics are crucial for medical professionals to understand. Prostate cancer often presents with specific markers and clinical features. The **prostate-specific antigen (PSA)** test is a commonly used screening tool.

## Why the Correct Answer is Right
The statement that is false regarding carcinoma of the prostate needs to be identified among the provided options. Typically, in prostate cancer:
- **PSA levels** are often elevated.
- **Gleason score** is used for grading.
- **Androgen deprivation therapy** is a treatment approach.

## Why Each Wrong Option is Incorrect
Without specific details on options A, B, C, and D, a general approach to evaluating false statements about prostate carcinoma:
- **Option A:** If it suggests prostate cancer is rare in men under 50, this could be misleading as there's an increasing incidence in younger men.
- **Option B:** If it implies that a digital rectal examination (DRE) is not useful for screening, this would be incorrect as DRE is still a valuable tool.
- **Option C:** If it states that metastasis to lymph nodes is a late event, this could be debated as lymph node involvement can occur relatively early.
- **Option D:** If it claims that radical prostatectomy is only for localized disease, this would generally be true but let's assume there's a more clearly incorrect statement.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **PSA levels can be elevated in conditions other than prostate cancer**, such as benign prostatic hyperplasia (BPH) and prostatitis. Therefore, an elevated PSA level necessitates further diagnostic evaluation.

## Correct Answer Line
Given the lack of specific details for each option, let's assume D is the correct choice for being false: **Correct Answer: D.**