Menstrual Disorders Practice Questions

Q: A 36-year-old woman has absence of menses for the last 4 months. Pregnancy test is negative. Serum levels of LH and FSH are raised. Serum estradiol level is low. What do these findings suggest?

Premature menopause. ### Explanation **1. Why Premature Menopause is Correct:** The patient presents with secondary amenorrhea (absence of menses for >3 months) and a hormonal profile indicating **Hypergonadotropic Hypogonadism**. * **Low Estradiol:** Indicates ovarian failure; the ovaries are no longer producing estrogen. * **Raised LH and FSH:** Due to the lack of negative feedback from estrogen and inhibin, the anterior pituitary secretes high levels of gonadotropins (FSH >40 IU/L is typically diagnostic). When this occurs before the age of 40, it is termed **Premature Ovarian Insufficiency (POI)** or Premature Menopause. **2. Why Other Options are Incorrect:** * **Bilateral Tubal Obstruction:** This causes infertility but does not affect the hormonal axis or the menstrual cycle, as the ovaries and uterus remain functional. * **PCOD:** Characterized by hyperandrogenism and chronic anovulation. Hormonally, there is typically an **increased LH:FSH ratio (2:1 or 3:1)**, but FSH is usually normal or low, and estrogen is not deficient (often elevated due to peripheral conversion). * **Exogenous Estrogen Administration:** This would lead to **low LH and FSH** levels due to artificial negative feedback on the hypothalamus and pituitary. **3. High-Yield Clinical Pearls for NEET-PG:** * **Definition:** Menopause occurring before age 40. * **Most Common Karyotype Abnormality:** Turner Syndrome (45,XO) or Mosaicism (45,X/46,XX). * **Fragile X Premutation:** The most common genetic cause of "sporadic" POI. * **Diagnostic Criteria:** Amenorrhea for $\geq$ 4 months with FSH levels in the menopausal range (usually $>25-40$ IU/L) on two occasions at least 4 weeks apart. * **Management:** Hormone Replacement Therapy (HRT) is mandatory until the age of natural menopause (approx. 50 years) to prevent osteoporosis and cardiovascular disease.

Q: A 26-year-old female presents with menstrual bleeding occurring 10 days prior to her usual menses. She reports her last menstrual period was heavier than usual. After a negative pregnancy test, a physician diagnoses dysfunctional uterine bleeding likely due to anovulation. If an endometrial biopsy were performed, what would be the most likely histologic appearance of the endometrium?

Proliferative endometrium with stromal breakdown. **Explanation:** The clinical presentation describes **Anovulatory Dysfunctional Uterine Bleeding (DUB)**. In anovulatory cycles, there is a failure of ovulation, meaning no corpus luteum is formed and no progesterone is produced. **1. Why Option D is Correct:** In the absence of progesterone, the endometrium remains in a continuous **proliferative phase** driven by unopposed estrogen. Without the stabilizing effect of progesterone, the endometrium thickens excessively and outgrows its blood supply. This leads to focal necrosis and irregular shedding, histologically seen as **proliferative endometrium with stromal breakdown** (evidenced by condensed stromal cells and "blue balls" of stroma). **2. Why Other Options are Incorrect:** * **Option A (Asynchronous secretory):** This is characteristic of a **Luteal Phase Defect**, where there is a lag between the glandular development and the menstrual date, but ovulation still occurs. * **Option B (Decidualized stroma):** This is seen in pregnancy or with exogenous progestin use (e.g., Mirena or OCPs). It represents a high-progesterone state. * **Option C (Early proliferative):** While the endometrium is proliferative, the presence of active bleeding (menorrhagia/metrorrhagia) specifically correlates with the "breakdown" morphology rather than a healthy, early-phase growth. **Clinical Pearls for NEET-PG:** * **Most common cause of DUB:** Anovulation (especially at extremes of age: menarche and perimenopause). * **Gold Standard for diagnosis in women >35:** Endometrial biopsy (to rule out hyperplasia/malignancy). * **Unopposed Estrogen:** Long-term anovulation increases the risk of endometrial hyperplasia and adenocarcinoma. * **Management:** First-line medical management for acute bleeding is often high-dose Estrogen or OCPs to stabilize the endometrial lining.

Q: A period of amenorrhea followed by massive bleeding is seen in premenopausal women with which of the following conditions?

Metropathia hemorrhagica. **Explanation:** **Metropathia Hemorrhagica (Schroeder’s Disease)** is a specific form of Dysfunctional Uterine Bleeding (DUB) typically seen in perimenopausal women. The underlying pathophysiology is **anovulation**. 1. **Why it is correct:** In anovulatory cycles, there is a failure of the follicle to rupture, leading to persistent estrogen production without the formation of a corpus luteum (and thus, no progesterone). This results in **prolonged endometrial hyperplasia**. Eventually, the estrogen levels fluctuate or the endometrium outgrows its blood supply, leading to breakthrough bleeding. Clinically, this manifests as a **period of amenorrhea (6–8 weeks)** due to the hyperestrogenic state, followed by **profuse, painless, prolonged bleeding** (epimenorrhagia). 2. **Why other options are incorrect:** * **Irregular Ripening:** This is due to **corpus luteum insufficiency** (poor progesterone production). It results in spotting before the actual period begins, not a period of amenorrhea followed by massive bleeding. * **Irregular Shedding:** This is due to the **persistent corpus luteum** (prolonged progesterone). It causes the functional layer of the endometrium to shed in a patchy, slow manner. The clinical hallmark is prolonged bleeding, but the period starts on time, and there is no preceding amenorrhea. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad:** Amenorrhea, followed by heavy bleeding, in a perimenopausal woman. * **Endometrial Finding:** Swiss-cheese hyperplasia (cystic glandular hyperplasia). * **Ovarian Finding:** Follicular cyst (usually unilateral). * **Uterus:** May be slightly enlarged, soft, and "myopathic." * **Management:** Dilation and Curettage (D&C) is both diagnostic (to rule out malignancy) and therapeutic.

Q: A 34-year-old woman presents with abnormal uterine bleeding. Which of the following is the LEAST likely cause of abnormal bleeding in this age group?

Endometrial atrophy. **Explanation:** The correct answer is **Endometrial atrophy**. Abnormal Uterine Bleeding (AUB) in reproductive-age women (typically 15–45 years) is classified by the **FIGO PALM-COEIN** criteria. In a 34-year-old woman, the uterus is under the constant influence of estrogen, which promotes endometrial proliferation. **Endometrial atrophy** occurs due to a state of estrogen deficiency, making it the hallmark cause of postmenopausal bleeding. It is highly unlikely in a woman of reproductive age unless there is severe premature ovarian insufficiency or prolonged use of certain hormonal contraceptives (e.g., DMPA). **Analysis of Incorrect Options:** * **Adenomyosis (A):** Common in women in their 30s and 40s, typically presenting with heavy menstrual bleeding (HMB) and dysmenorrhea. * **Fibroids (B):** Leiomyomas are the most common benign tumors in women of reproductive age and a leading cause of HMB and pelvic pressure. * **Polyps (C):** Endometrial polyps are frequent causes of intermenstrual bleeding and AUB in the premenopausal age group. **NEET-PG High-Yield Pearls:** * **Most common cause of AUB in postmenopausal women:** Endometrial atrophy (60-80%), though malignancy must always be ruled out. * **Most common cause of AUB in adolescents:** Anovulation due to an immature Hypothalamic-Pituitary-Ovarian (HPO) axis. * **Gold Standard Investigation for AUB:** Hysteroscopy (allows direct visualization and directed biopsy). * **First-line investigation:** Transvaginal Ultrasound (TVS).

Q: What is the commonest cause of secondary amenorrhea?

Pregnancy. **Explanation:** **Why Pregnancy is the Correct Answer:** In any woman of reproductive age presenting with a cessation of menses, **pregnancy** is the most common cause of secondary amenorrhea. Physiologically, the persistence of the corpus luteum and subsequent production of hCG, progesterone, and estrogen prevents the shedding of the endometrial lining. For NEET-PG, the first step in the clinical evaluation of secondary amenorrhea is always a **urine pregnancy test (UPT)** to rule this out before proceeding to hormonal or anatomical investigations. **Analysis of Incorrect Options:** * **A. Tuberculosis:** While Genital TB is a significant cause of secondary amenorrhea in developing countries (leading to Asherman’s syndrome or endometrial destruction), it is far less frequent than pregnancy. * **C. Post-pill amenorrhea:** This refers to a delay in the resumption of menses after discontinuing oral contraceptives. While common, it usually resolves within 3–6 months and is statistically less frequent than pregnancy. * **D. Anemia:** Severe systemic illness or chronic anemia can cause hypothalamic dysfunction leading to amenorrhea, but it is a secondary systemic factor rather than the primary statistical cause. **High-Yield Clinical Pearls for NEET-PG:** * **Definition:** Secondary amenorrhea is the absence of menses for **3 months** (in women with previously regular cycles) or **6 months** (in those with irregular cycles). * **Most common pathological cause:** Polycystic Ovary Syndrome (PCOS). * **Most common cause of primary amenorrhea:** Turner Syndrome (45,XO). * **Asherman’s Syndrome:** The most common cause of secondary amenorrhea due to uterine synechiae (often post-curettage or TB). * **First Investigation:** Urine Pregnancy Test (UPT). * **First Hormonal Test:** Serum Prolactin and TSH (after ruling out pregnancy).

Q: In a patient with secondary amenorrhea who does not experience withdrawal bleeding after estrogen and progesterone administration, the underlying issue is most likely at which level?

Endometrium. This question tests the understanding of the **stepwise evaluation of secondary amenorrhea**. ### **Explanation of the Correct Answer** The **Estrogen-Progesterone Challenge Test** is the final step in localizing the cause of amenorrhea. 1. **Estrogen** is given to prime the endometrium (proliferation). 2. **Progesterone** is then given to induce secretory changes. 3. Upon withdrawal, if the outflow tract is patent and the endometrium is functional, **withdrawal bleeding must occur.** If there is **no bleeding** after this combined therapy, it indicates that the target organ—the **endometrium**—is either absent, damaged, or the outflow tract is obstructed. This is characteristic of **Asherman’s Syndrome** (intrauterine synechiae) or **Müllerian agenesis** (though the latter usually presents as primary amenorrhea). ### **Why Other Options are Incorrect** * **A & B (Pituitary & Hypothalamus):** If the defect were at the level of the brain (low GnRH or FSH/LH), the endometrium would still be responsive. Providing exogenous estrogen and progesterone bypasses the brain, so these patients **would** experience withdrawal bleeding. * **C (Ovary):** In premature ovarian failure, the endogenous estrogen is low, but the endometrium remains responsive. These patients **would** bleed after receiving exogenous hormones. ### **High-Yield NEET-PG Clinical Pearls** * **Step 1:** Rule out pregnancy (most common cause of secondary amenorrhea). * **Step 2:** Progesterone Challenge Test (PCT). If bleeding occurs = **Anovulation** (e.g., PCOS). * **Step 3:** If PCT is negative, perform the Estrogen + Progesterone Challenge. * **Negative E+P Challenge:** Confirms **End-organ failure** (Asherman’s Syndrome). * **Gold Standard Investigation** for Asherman’s Syndrome: **Hysteroscopy.**

Q: Massive painless vaginal bleeding after a 6-8 week period of amenorrhea, in a premenopausal woman, is suggestive of?

Metropathia haemorrhagica. **Explanation:** **Metropathia Haemorrhagica (Schroeder’s Disease)** is a specialized form of Dysfunctional Uterine Bleeding (DUB) typically seen in perimenopausal women. It occurs due to **persistent unovulation**. 1. **Why it is correct:** The pathophysiology involves a single follicle that matures but fails to rupture (no ovulation). This leads to a state of **unopposed estrogen** with an absolute absence of progesterone. The estrogen causes the endometrium to proliferate excessively (hyperplasia). Eventually, the estrogen levels fluctuate or the endometrium outgrows its blood supply, leading to **painless, massive, and prolonged bleeding** following a period of amenorrhea (usually 6-8 weeks). This classic clinical triad is often referred to as the "Metropathic pattern." 2. **Why other options are incorrect:** * **Irregular Ripening:** Caused by poor corpus luteum function (progesterone deficiency). It presents as premenstrual spotting, not massive bleeding after amenorrhea. * **Irregular Shedding (Halban Disease):** Caused by a persistent corpus luteum. It presents as prolonged, heavy bleeding, but the bleeding starts *on time* with the expected menses, not after a period of amenorrhea. * **Endometrial Carcinoma:** While it causes abnormal bleeding in older women, it typically presents as postmenopausal bleeding or intermenstrual bleeding, rather than the specific cyclic pattern of amenorrhea followed by flooding. **High-Yield Clinical Pearls for NEET-PG:** * **Characteristic Finding:** On D&C, the endometrium shows **Swiss-Cheese Hyperplasia** (cystic glandular hyperplasia). * **Ovarian Finding:** Presence of a follicular cyst (Amnestic follicle) on one ovary; the other ovary is usually small/atrophic. * **Uterine Finding:** The uterus is often symmetrically enlarged (myohyperplasia) due to prolonged estrogen stimulation.

Q: Which of the following is NOT a cause for secondary amenorrhea?

Turner syndrome. **Explanation:** The distinction between primary and secondary amenorrhea is a high-yield concept in NEET-PG. **Secondary amenorrhea** is defined as the absence of menses for 3 months (in women with regular cycles) or 6 months (in those with irregular cycles) after menarche has already occurred [1]. **Why Turner Syndrome is the Correct Answer:** **Turner Syndrome (45, XO)** is the most common cause of **Primary Amenorrhea**. It is characterized by hypergonadotropic hypogonadism due to "streak ovaries" (gonadal dysgenesis). Since the ovaries fail to function from birth, these patients typically never achieve menarche. While a very small percentage (approx. 5-10%) with mosaicism (45,X/46,XX) may experience menstruation or even pregnancy, it remains the classic textbook cause of primary, not secondary, amenorrhea. **Analysis of Incorrect Options:** * **Pregnancy:** This is the **most common cause** of secondary amenorrhea worldwide. It must always be ruled out first with a urine pregnancy test (uPT). * **PCOD:** This is the most common **pathological** cause of secondary amenorrhea/oligomenorrhea [1]. It involves chronic anovulation due to hormonal imbalances (high LH:FSH ratio and hyperandrogenism). * **Hyperprolactinemia:** Elevated prolactin (due to prolactinoma or drugs) inhibits GnRH pulsatility, leading to low FSH/LH levels and subsequent secondary amenorrhea [1]. **NEET-PG Clinical Pearls:** * **Most common cause of Primary Amenorrhea:** Turner Syndrome. * **Most common cause of Secondary Amenorrhea:** Pregnancy. * **Asherman Syndrome:** The most common **uterine** cause of secondary amenorrhea (post-curettage intrauterine adhesions) [1]. * **Sheehan Syndrome:** Postpartum pituitary necrosis leading to secondary amenorrhea [1].

Q: Delayed puberty is defined if menstruation does not occur by which age?

16 years. **Explanation:** Delayed puberty in females is clinically defined by the absence of secondary sexual characteristics or the failure to achieve menarche within specific age limits. **Why 16 years is the correct answer:** According to standard gynecological guidelines (including Williams and Berek & Novak), **Primary Amenorrhea** (delayed puberty) is diagnosed if: 1. Menarche has not occurred by **age 16**, regardless of the presence of normal growth and secondary sexual characteristics. 2. Menarche has not occurred by **age 13** in the absence of secondary sexual characteristics (e.g., thelarche/breast development). Since the question asks for the age of menstruation (menarche) without specifying the status of secondary sexual characteristics, the standard threshold of 16 years is applied. **Analysis of Incorrect Options:** * **A (13 years):** This is the cutoff for delayed puberty *only if* there is a total absence of secondary sexual characteristics. * **B (14 years):** While some older texts used 14 as a cutoff for girls without breast development, current international guidelines prioritize 13 and 16. * **C (15 years):** The American College of Obstetricians and Gynecologists (ACOG) recently suggested evaluating girls at age 15, but for the purpose of NEET-PG and standard textbook definitions, 16 remains the definitive answer for primary amenorrhea. **High-Yield Clinical Pearls for NEET-PG:** * **Sequence of Puberty:** Thelarche (Breast) → Pubarche (Hair) → Growth Spurt → Menarche (Bleeding). Remember the mnemonic: **"T-P-G-M"**. * **First Sign of Puberty:** Thelarche (usually occurs around age 8–10). * **Most Common Cause of Primary Amenorrhea:** Turner Syndrome (45,XO) – characterized by streak ovaries and short stature. * **Müllerian Agenesis (MRKH Syndrome):** Second most common cause; presents with 46,XX karyotype, normal secondary sexual characteristics, but absent uterus/vagina.

Question 1

A 36-year-old woman has absence of menses for the last 4 months. Pregnancy test is negative. Serum levels of LH and FSH are raised. Serum estradiol level is low. What do these findings suggest?

Accepted Answer

Premature menopause

Answer

Bilateral tubal obstruction

Answer

Polycystic ovarian disease (PCOD)

Answer

Exogenous estrogen administration

Question 2

A 26-year-old female presents with menstrual bleeding occurring 10 days prior to her usual menses. She reports her last menstrual period was heavier than usual. After a negative pregnancy test, a physician diagnoses dysfunctional uterine bleeding likely due to anovulation. If an endometrial biopsy were performed, what would be the most likely histologic appearance of the endometrium?

Accepted Answer

Proliferative endometrium with stromal breakdown

Answer

Asynchronous secretory endometrium

Answer

Decidualized stroma with inactive glands

Answer

Early proliferative endometrium

Question 3

A period of amenorrhea followed by massive bleeding is seen in premenopausal women with which of the following conditions?

Accepted Answer

Metropathia hemorrhagica

Answer

Irregular ripening

Answer

Irregular shedding

Answer

All of the above

Question 4

A 34-year-old woman presents with abnormal uterine bleeding. Which of the following is the LEAST likely cause of abnormal bleeding in this age group?

Accepted Answer

Endometrial atrophy

Answer

Adenomyosis

Answer

Fibroids

Answer

Polyps

Question 5

What is the commonest cause of secondary amenorrhea?

Accepted Answer

Pregnancy

Answer

Tuberculosis

Answer

Post-pill amenorrhea

Answer

Anemia

Question 6

Polymenorrhagia is defined as:

Accepted Answer

Increase in frequency of cycle along with excessive or prolonged bleeding.

Answer

Increase in frequency of cycle with average normal bleeding.

Answer

Increase in duration of cycle with less bleeding.

Answer

Regular cycle with less bleeding.

Question 7

In a patient with secondary amenorrhea who does not experience withdrawal bleeding after estrogen and progesterone administration, the underlying issue is most likely at which level?

Accepted Answer

Endometrium

Answer

Pituitary

Answer

Hypothalamus

Answer

Ovary

Question 8

Massive painless vaginal bleeding after a 6-8 week period of amenorrhea, in a premenopausal woman, is suggestive of?

Accepted Answer

Metropathia haemorrhagica

Answer

Irregular ripening

Answer

Irregular shedding (Halban Disease)

Answer

Endometrial carcinoma

Question 9

Which of the following is NOT a cause for secondary amenorrhea?

Accepted Answer

Turner syndrome

Answer

Pregnancy

Answer

Polycystic Ovarian Disease (PCOD)

Answer

Hyperprolactinemia

Question 10

Delayed puberty is defined if menstruation does not occur by which age?

Accepted Answer

16 years

Answer

13 years

Answer

14 years

Answer

15 years

Menstrual Disorders — MCQs

Menstrual Disorders — MCQs

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