The following is true about bladder stones ?
**Core Concept**
Bladder stones, also known as vesical calculi, are hardened masses of minerals that form in the bladder. They are often associated with **urinary retention**, **neurogenic bladder**, or **bladder outlet obstruction**. The underlying cause of bladder stone formation is usually related to **urine stasis** and **concentrated urine**.
**Why the Correct Answer is Right**
Since the correct answer is not provided, I will give a general explanation. Bladder stones are typically formed due to the precipitation of minerals such as **calcium oxalate** or **uric acid**. This process is facilitated by **urine pH**, **concentration**, and **stasis**. The stones can cause **irritative voiding symptoms**, such as **dysuria** and **frequency**, as well as **hematuria**.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the question does not provide a specific statement to evaluate.
**Option B:** Similarly, this option is incorrect because there is no statement to assess.
**Option C:** This option is also incorrect due to the lack of a statement.
**Option D:** This option is incorrect for the same reason as the others.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that bladder stones are more common in **men** than **women**, and they often present with **intermittent urinary obstruction**. It is essential to consider **urinary tract infections** and **bladder cancer** in the differential diagnosis.
**Correct Answer:**