Reproductive Endocrinology Practice Questions

Q: Spinnbarkeit is maximum shown at which phase?

Ovulatory. ***Ovulatory*** - **Spinnbarkeit** refers to the stringy, stretchy quality of cervical mucus, which is maximal during the ovulatory phase due to high **estrogen levels**. - This highly elastic mucus facilitates **sperm transport** to the uterus and fallopian tubes for fertilization. *Menstrual phase* - During the menstrual phase, **cervical mucus** is typically minimal and sticky, making it unfavorable for sperm survival. - This phase is characterized by low estrogen and progesterone levels, leading to the **shedding of the uterine lining**. *Post ovulatory* - After ovulation, under the influence of **progesterone**, cervical mucus becomes thick, sticky, and opaque, decreasing **spinnbarkeit**. - This change in mucus consistency forms a **barrier to sperm penetration** into the uterus. *Follicular phase* - In the early follicular phase, **estrogen levels** are low, resulting in thick, scanty, and opaque cervical mucus with low **spinnbarkeit**. - As the follicular phase progresses and estrogen levels rise, the mucus gradually becomes more **watery and elastic**, but it doesn't reach its peak stretchiness until ovulation.

Q: Vaginal pH before puberty is?

Neutral (around 7). ***Neutral (around 7)*** - Before puberty, the vagina lacks the influence of **estrogen**, which is essential for the colonization of **Lactobacillus** bacteria. - Without Lactobacillus, there is no significant production of lactic acid, resulting in a **neutral pH** environment. *Approximately 6* - A pH of approximately 6 is still slightly acidic but less so than a mature vagina. - This value is not typical for the prepubertal stage, which generally represents an environment without significant acidic production. *Approximately 4.5* - A pH of approximately 4.5 is characteristic of a **healthy, estrogenized adult vagina** where **Lactobacillus** bacteria produce lactic acid. - This acidic environment is crucial for protecting against pathogenic infections and is not found in prepubertal individuals. *Approximately 5* - A pH of approximately 5 is acidic, though less so than the optimal adult vaginal pH. - This value indicates some lactic acid production, which is minimal or absent before the onset of puberty.

Q: What is thelarche?

Hormone-related breast development in girls. ***Hormone-related breast enlargement in girls*** - **Thelarche** specifically refers to the first sign of puberty in girls, which is the **onset of breast development**. - This development is primarily driven by the action of **estrogen** on breast tissue. *Breast development in boys during puberty* - This condition is known as **gynecomastia**, which is distinguishable from thelarche observed in girls. - While also hormone-related, **gynecomastia** often involves an imbalance between estrogen and androgens. *Breast enlargement during pregnancy* - Breast enlargement during pregnancy is a normal physiological change in preparation for lactation, driven by a surge in various hormones like **estrogen, progesterone, and prolactin**. - It is distinct from the initial, puberty-related breast development in girls. *Breast enlargement due to hormonal therapy in postmenopausal women* - This is an induced effect of **exogenous hormones** (e.g., hormone replacement therapy) and not a natural developmental stage like thelarche. - It is a side effect of medication, not the start of puberty.

Q: A 35-year-old woman presents with 4 months of amenorrhea, increased FSH, LH, and decreased estrogen. What is the most likely diagnosis?

Premature ovarian insufficiency. ***Premature ovarian insufficiency (POI)*** - The patient's age (35 years) combined with 4 months of **amenorrhea**, increased **FSH** and **LH**, and decreased **estrogen** is characteristic of premature ovarian insufficiency (also called premature ovarian failure). - The hormonal profile (**hypergonadotropic hypogonadism**) indicates ovarian failure occurring before the age of **40 years**, which defines POI. - POI affects approximately **1% of women under 40** and can present with amenorrhea, infertility, and symptoms of estrogen deficiency. *Menopause* - Menopause is diagnosed after **12 consecutive months of amenorrhea** in a woman, typically occurring around age **51 years** (natural menopause). - While the hormonal profile of elevated FSH/LH and low estrogen is consistent with menopause, the patient's **age of 35 years** and **only 4 months of amenorrhea** do not meet the criteria for natural menopause. *Late menopause* - Late menopause refers to menopause occurring at a later age than average, typically after age **55 years**. - This diagnosis is completely inconsistent with the patient's age of 35 years. *Perimenopause* - Perimenopause is the transitional phase leading up to menopause, characterized by **irregular menstrual cycles** and **fluctuating hormone levels**. - While FSH levels may be elevated at times, perimenopause typically shows **variable hormone levels** rather than the sustained pattern of high FSH/LH with low estrogen seen in this case. - The **sustained amenorrhea** and pronounced hormonal shifts indicate ovarian failure (POI) rather than perimenopausal transition.

Q: What is the best method to assess endometrial activity?

Endometrial biopsy. ***Biopsy*** - **Endometrial biopsy** provides direct tissue samples, allowing for histological examination of the endometrial glands and stroma to assess their phase (proliferative, secretory) and underlying pathology. - This method is considered the **gold standard** for accurately determining endometrial activity and diagnosing conditions like hyperplasia or carcinoma. *HSG* - **Hysterosalpingography (HSG)** is primarily used to evaluate the patency of the fallopian tubes and the shape of the uterine cavity, not the functional activity of the endometrium itself. - It involves injecting contrast dye and taking X-rays, which helps identify structural abnormalities but does not provide microscopic details of endometrial tissue. *USG* - **Transvaginal ultrasonography (USG)** measures endometrial thickness and identifies gross structural abnormalities like polyps or fibroids. - While it can suggest the endometrial phase based on thickness, it does not offer the definitive cellular-level detail of endometrial activity that a biopsy provides. *Colposcopy* - **Colposcopy** is a procedure used to visualize the cervix and vagina with a magnified view, primarily for detecting and evaluating abnormal cells that may lead to cervical cancer. - It is **not used** for assessing the endometrial lining or its physiological activity.

Q: A 15-year-old female presents with primary amenorrhea. Her breasts are Tanner stage 4, but she has no axillary or pubic hair. What is the most likely diagnosis?

Complete Androgen Insensitivity Syndrome (CAIS). ***Complete Androgen Insensitivity Syndrome (CAIS)*** - Previously known as **Testicular Feminization Syndrome**, this condition presents with **breast development (due to peripheral conversion of androgens to estrogens)** but **absent pubic/axillary hair** due to **androgen receptor insensitivity**. - Affected individuals are **genetically male (46, XY)** but have a female external phenotype and **no uterus**, leading to **primary amenorrhea**. *Turner's syndrome* - Characterized by **gonadal dysgenesis (streak gonads)**, leading to **absent or rudimentary breast development** and **primary amenorrhea**. - Individuals are typically **45, XO** and often present with short stature and characteristic physical features like a webbed neck. *Mullerian agenesis* - Involves the **agenesis or hypoplasia of the Mullerian ducts**, resulting in an **absent or hypoplastic uterus and vagina**. - Patients have **normal breast and pubic/axillary hair development** because their ovaries are functional and produce hormones. *Premature ovarian failure* - Involves the **cessation of ovarian function before age 40**, leading to **menopausal symptoms** and **amenorrhea**. - However, patients would have initially gone through **normal puberty**, including the development of pubic/axillary hair, which is absent in this case.

Q: A 20-year-old average-weight female complains of oligomenorrhea along with facial hair. Preliminary investigation reveals raised free testosterone levels. Which of the following could be a likely etiology?

PCOD. ***PCOD*** - The triad of **oligomenorrhea**, **hirsutism** (facial hair), and **elevated free testosterone** levels is highly suggestive of **Polycystic Ovarian Disease (PCOD)** [1]. - **PCOD** is characterized by **anovulation**, leading to menstrual irregularities, and **hyperandrogenism** which causes hirsutism [1]. *Idiopathic hirsutism* - While idiopathic hirsutism causes **facial hair** and other androgenic symptoms, it is characterized by **normal androgen levels**, which contradicts the elevated free testosterone in this case. - **Oligomenorrhea** is not a typical feature of idiopathic hirsutism. *Adrenal hyperplasia* - **Adrenal hyperplasia**, particularly **Congenital Adrenal Hyperplasia (CAH)**, can cause hyperandrogenism and menstrual irregularities due to **enzymatic defects** in adrenal steroidogenesis. - However, it typically presents with **markedly elevated 17-hydroxyprogesterone** levels, which are not mentioned here, and often has an earlier onset or more severe virilization. *Testosterone secreting tumour* - A **testosterone-secreting tumor** (e.g., of the ovary or adrenal gland) would cause **sudden-onset**, rapid progression of **severe hirsutism** and **virilization**, often with **very high testosterone levels** [1]. - The gradual onset implied by "complains of" and the average weight of the patient make a tumor less likely than PCOD, though it would need to be ruled out if testosterone levels were extremely high [1].

Q: What does the cornification index indicate in the context of vaginal epithelium?

Estrogenic effect. ***Estrogenic effect*** - The **cornification index** measures the percentage of **superficial cornified squamous cells** in a vaginal smear. - These superficial cells undergo cornification specifically due to **estrogen stimulation**. - A **higher cornification index** indicates greater estrogenic activity on the vaginal epithelium. - This is a key cytological marker used to assess **estrogenic status** in clinical practice. *Progesterone effect* - Progesterone causes **intermediate and parabasal cells** to predominate, not superficial cornified cells. - It results in a **lower cornification index** with folded intermediate cells and increased cellular exfoliation. - The maturation index shifts leftward under progesterone influence. *Effect of LH* - **Luteinizing hormone (LH)** acts on the ovary to trigger ovulation and corpus luteum formation. - LH has **no direct effect** on vaginal epithelial cornification. - The cornification index reflects hormonal effects at the tissue level, not pituitary gonadotropins. *Effect of FSH* - **Follicle-stimulating hormone (FSH)** stimulates ovarian follicle development and estrogen synthesis. - While FSH promotes estrogen production indirectly, the cornification index specifically measures the **direct estrogenic effect** on vaginal cells, not FSH levels. - FSH itself does not cause epithelial cornification.

Question 1

Spinnbarkeit is maximum shown at which phase?

Accepted Answer

Ovulatory

Answer

Menstrual phase

Answer

Post ovulatory

Answer

Follicular phase

Question 2

Vaginal pH before puberty is?

Accepted Answer

Neutral (around 7)

Answer

Approximately 6

Answer

Approximately 4.5

Answer

Approximately 5

Question 3

What is thelarche?

Accepted Answer

Hormone-related breast development in girls

Answer

Breast development in boys during puberty

Answer

Breast enlargement during pregnancy

Answer

Breast enlargement due to hormonal therapy in postmenopausal women

Question 4

A 35-year-old woman presents with 4 months of amenorrhea, increased FSH, LH, and decreased estrogen. What is the most likely diagnosis?

Accepted Answer

Premature ovarian insufficiency

Answer

Menopause

Answer

Late menopause

Answer

Perimenopause

Question 5

In an amenorrheic patient who has had pituitary ablation for a craniopharyngioma, which of the following regimens is most likely to result in an ovulatory cycle?

Accepted Answer

Human menopausal or recombinant gonadotropin, followed by hCG

Answer

Continuous infusion of GnRH

Answer

Letrozole

Answer

Clomiphene citrate

Question 6

What is the best method to assess endometrial activity?

Accepted Answer

Endometrial biopsy

Answer

HSG

Answer

USG

Answer

Colposcopy

Question 7

A 15-year-old female presents with primary amenorrhea. Her breasts are Tanner stage 4, but she has no axillary or pubic hair. What is the most likely diagnosis?

Accepted Answer

Complete Androgen Insensitivity Syndrome (CAIS)

Answer

Turner's syndrome

Answer

Premature ovarian failure

Answer

Mullerian agenesis

Question 8

A 20-year-old average-weight female complains of oligomenorrhea along with facial hair. Preliminary investigation reveals raised free testosterone levels. Which of the following could be a likely etiology?

Accepted Answer

PCOD

Answer

Testosterone secreting tumour

Answer

Adrenal hyperplasia

Answer

Idiopathic hirsutism

Question 9

Which of the following statements is true regarding Stein-Leventhal syndrome?

Accepted Answer

It is associated with enlarged ovaries and multiple follicular cysts.

Answer

It is only characterized by oligomenorrhea and amenorrhea.

Answer

It is only characterized by amenorrhea.

Answer

It does not involve ovarian cysts.

Question 10

What does the cornification index indicate in the context of vaginal epithelium?

Accepted Answer

Estrogenic effect

Answer

Progesterone effect

Answer

Effect of LH

Answer

Effect of FSH

Reproductive Endocrinology — MCQs

Reproductive Endocrinology — MCQs

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