**Core Concept**
Fibroids, also known as uterine leiomyomas, are benign tumors that arise from the smooth muscle layer of the uterus. They are a common cause of pelvic mass, menorrhagia, and infertility due to their location and impact on uterine function.

**Why the Correct Answer is Right**
Amenorrhea, or the absence of menstruation, is not typically associated with fibroids. Fibroids can cause an increase in menstrual bleeding (menorrhagia), a decrease in fertility due to distortion of the uterine cavity and interference with implantation, and a palpable pelvic mass. However, amenorrhea is more commonly related to other conditions such as hypothalamic amenorrhea, pituitary tumors, or ovarian failure. The growth of fibroids does not directly lead to a cessation of menstrual cycles.

**Why Each Wrong Option is Incorrect**
**Option A:** Infertility can be caused by fibroids due to their potential to distort the uterine cavity and interfere with implantation of the embryo.
**Option C:** A pelvic mass is a common symptom of fibroids, as they can grow to a size that can be palpated during a physical examination.
**Option D:** Menorrhagia, or excessive menstrual bleeding, is a common symptom of fibroids, particularly those that are submucosal or intramural.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that fibroids can cause a wide range of symptoms, including pelvic pain, urinary frequency, and constipation, in addition to the ones listed above.

**Correct Answer:**
✓ Correct Answer: B. Amenorrhea