Gynecologic Oncology Practice Questions

Q: A 30-year-old woman's Pap smear results are provided below. What is your next recommended approach?

Advise loop electrosurgical excision procedure. ***Advise loop electrosurgical excision procedure*** - **HSIL (CIN 2/3)** on Pap smear requires excisional treatment, and **LEEP** is the preferred first-line procedure for diagnosis and treatment. - LEEP provides complete **histopathological evaluation** to rule out **invasive carcinoma** and ensures adequate treatment of high-grade lesions. *Continue routine screening* - Routine screening is appropriate only for **normal cytology** or **ASCUS** with negative HPV testing. - **High-grade lesions (HSIL)** have significant **malignant potential** and require immediate intervention, not observation. *Hysterectomy* - Reserved for **invasive cervical cancer**, **recurrent CIN** after failed conservative treatment, or when fertility preservation is not desired. - **Primary hysterectomy** for CIN 2/3 is excessive and removes fertility potential unnecessarily in a 30-year-old woman. *Cryotherapy* - Suitable only for **small CIN 1** lesions or **CIN 2** lesions covering less than 2 quadrants with visible transformation zone. - **Cannot provide tissue sample** for histopathological confirmation and may be inadequate for extensive CIN 2/3 lesions.

Q: Which of the following indications usually warrants the institution of single-agent chemotherapy following evacuation of a hydatidiform mole?

A rise in hCG titers. In the management of Gestational Trophoblastic Disease (GTD), the primary goal after suction evacuation is the monitoring of serum β-hCG levels to detect malignant transformation into Gestational Trophoblastic Neoplasia (GTN). ### **Explanation of the Correct Answer** **Option A (A rise in hCG titers)** is a definitive FIGO criterion for diagnosing post-molar GTN. Specifically, a rise of **10% or greater** across three consecutive weekly titers (days 1, 7, and 14) indicates active trophoblastic proliferation. Once GTN is diagnosed, chemotherapy (usually single-agent Methotrexate or Actinomycin-D for low-risk disease) is mandatory to prevent local invasion and distant metastasis. ### **Analysis of Incorrect Options** * **Option B:** A plateau of hCG is indeed an indication for chemotherapy, but the duration must be for **at least 3 weeks** (4 values on days 1, 7, 14, and 21), not just 1 week. * **Option C:** This represents a normal physiological recovery. If hCG returns to normal, the patient is monitored but does not require chemotherapy. * **Option D:** The appearance of liver metastasis classifies the patient as **High-Risk GTN** (WHO Score ≥7). Such cases warrant **multi-agent chemotherapy** (e.g., EMA-CO regimen) rather than the single-agent therapy specified in the question. ### **High-Yield Clinical Pearls for NEET-PG** * **FIGO Criteria for GTN:** 1. hCG plateau for 4 values over 3 weeks. 2. hCG rise (≥10%) for 3 values over 2 weeks. 3. Persistence of hCG 6 months after evacuation. 4. Histological diagnosis of Choriocarcinoma. * **Investigation of Choice for Follow-up:** Serial quantitative serum β-hCG. * **Contraception:** Combined Oral Contraceptive Pills (COCs) are preferred after evacuation once hCG levels normalize; avoid IUCDs until hCG is undetectable due to the risk of perforation.

Q: Which ovarian tumor is typically bilateral?

Dysgerminoma. **Explanation:** **Dysgerminoma** is the most common malignant germ cell tumor (GCT) of the ovary. Its defining clinical characteristic among germ cell tumors is its tendency for **bilaterality**, occurring in approximately **10–15%** of cases. In contrast, almost all other malignant germ cell tumors are almost always unilateral. Dysgerminomas are radiosensitive, chemo-sensitive, and often associated with gonadal dysgenesis (e.g., Swyer syndrome). **Analysis of Incorrect Options:** * **Endodermal Sinus Tumor (Yolk Sac Tumor):** This is the second most common malignant GCT. It is highly aggressive, rapidly growing, and virtually always **unilateral**. It is characterized by elevated **AFP** levels and Schiller-Duval bodies on histology. * **Immature Teratoma:** These tumors contain tissues from all three germ layers (predominantly neuroepithelium). They are almost always **unilateral**, though the contralateral ovary may occasionally harbor a *benign* cystic teratoma. * **Embryonal Cell Carcinoma:** A rare, highly malignant GCT that produces both AFP and hCG. It typically presents as a large **unilateral** mass. **NEET-PG High-Yield Pearls:** * **Most common malignant GCT:** Dysgerminoma. * **Tumor Markers:** Dysgerminoma is associated with elevated **LDH** and occasionally hCG. * **Microscopy:** Look for "large cells with clear cytoplasm and central nuclei (fried-egg appearance) separated by fibrous septa infiltrated with lymphocytes." * **Rule of Thumb:** If a malignant germ cell tumor is bilateral, the answer is almost always Dysgerminoma. If an epithelial tumor is bilateral, consider Serous Cystadenocarcinoma or Krukenberg tumor.

Q: What is the WHO prognostic score for high-risk gestational trophoblastic neoplasia (GTN)?

>= 7. **Explanation:** Gestational Trophoblastic Neoplasia (GTN) is staged using the **FIGO Staging and WHO Scoring System**. Unlike other cancers, GTN management is determined by a "Prognostic Risk Score" rather than just anatomical spread. This score (0-4 points per factor) evaluates variables such as age, antecedent pregnancy, interval from index pregnancy, pretreatment hCG levels, largest tumor size, site and number of metastases, and previous chemotherapy failure. * **Correct Answer (B):** A total score of **≥ 7** is classified as **High-Risk GTN**. These patients have a higher risk of developing resistance to single-agent chemotherapy and are therefore treated primarily with **multi-agent chemotherapy** (typically the EMA-CO regimen). * **Incorrect Options (A, C, D):** A score of **0–6** is classified as **Low-Risk GTN**, usually treated with single-agent chemotherapy (Methotrexate or Actinomycin-D). Scores of 10 or 15 do not represent the standard threshold for high-risk classification, though a score ≥ 13 is sometimes used to denote "ultra-high risk" in specialized centers. **High-Yield Clinical Pearls for NEET-PG:** 1. **Low Risk (0-6):** Single-agent chemo (Methotrexate is the first choice). 2. **High Risk (≥ 7):** Multi-agent chemo (EMA-CO: Etoposide, Methotrexate, Actinomycin-D, Cyclophosphamide, Oncovin/Vincristine). 3. **Most Important Prognostic Factor:** The most significant factor in the scoring system is the **previous failure of chemotherapy**. 4. **Commonest Site of Metastasis:** The **Lungs** (80%), followed by the vagina (30%). 5. **Choriocarcinoma** is the most common histological type of GTN following a term pregnancy.

Q: The EMA-CO chemotherapy regimen is used in the treatment of which of the following conditions?

Gestational trophoblastic neoplasia. **Explanation:** The **EMA-CO** regimen is the gold-standard chemotherapy for **high-risk Gestational Trophoblastic Neoplasia (GTN)**, defined by a FIGO/WHO score of ≥7. **Why Option A is correct:** GTN is highly chemosensitive. While low-risk cases (score <7) are treated with single-agent Methotrexate or Actinomycin-D, high-risk cases require multi-agent therapy. EMA-CO is an acronym for: * **E**toposide * **M**ethotrexate * **A**ctinomycin-D * **C**yclophosphamide * **O**nvocin (Vincristine) This regimen is administered in alternating cycles (EMA on days 1-2 and CO on day 8) to maximize tumor kill while allowing bone marrow recovery. **Why the other options are incorrect:** * **Malignant Ovarian Germ Cell Tumors:** The standard of care is the **BEP regimen** (Bleomycin, Etoposide, and Cisplatin). * **Endometrial Carcinoma:** Advanced or recurrent cases are typically treated with **Carboplatin and Paclitaxel**. * **Cervical Carcinoma:** The primary treatment for advanced stages is **Cisplatin-based chemotherapy**, often combined with Paclitaxel or used as a radiosensitizer during radiotherapy. **High-Yield Clinical Pearls for NEET-PG:** * **FIGO Scoring:** A score of **0-6 is Low Risk** (Single agent); **≥7 is High Risk** (Multi-agent/EMA-CO). * **Monitoring:** The most sensitive marker for treatment response and follow-up in GTN is **serum β-hCG**. * **Salvage Therapy:** For EMA-CO resistant cases, **EMA-EP** (Etoposide/Cisplatin) is often used. * **Common Side Effect:** Myelosuppression is the most significant dose-limiting toxicity of the EMA-CO regimen.

Q: A lesion in a female child born to a mother treated with diethylstilbestrol (DES) is most likely to be?

Vaginal adenosis. **Explanation:** **Diethylstilbestrol (DES)** is a synthetic non-steroidal estrogen that was historically used to prevent miscarriages. Its use is associated with a spectrum of reproductive tract anomalies in female offspring (DES daughters). **Why Vaginal Adenosis is the correct answer:** Vaginal adenosis is the **most common** benign anomaly found in DES-exposed daughters (occurring in up to 30–90% of cases). It is characterized by the presence of glandular (columnar) epithelium in the vagina, where normally only squamous epithelium should exist. While DES exposure is famously linked to **Clear Cell Adenocarcinoma (CCAC)** of the vagina/cervix, adenosis is the precursor lesion and is statistically far more frequent than the malignancy itself. **Analysis of Incorrect Options:** * **B. Sarcoma botryoides:** This is an embryonal rhabdomyosarcoma (the most common vaginal tumor in children <5 years). It presents as a "grape-like" mass but is unrelated to DES exposure. * **C. Cervical erosion:** While DES can cause structural changes like cervical "cockscomb" or "collars," cervical erosion is a non-specific finding often related to hormonal changes or chronic cervicitis, not specifically pathognomonic for DES. * **D. Endometrial carcinoma:** DES exposure is primarily linked to vaginal and cervical pathology (CCAC), not endometrial cancer. **High-Yield Clinical Pearls for NEET-PG:** 1. **Most common lesion:** Vaginal adenosis. 2. **Most characteristic malignancy:** Clear Cell Adenocarcinoma (CCAC) of the vagina/cervix. 3. **Structural anomalies:** T-shaped uterus, cervical hoods, cockscomb cervix, and transverse vaginal septa. 4. **Mechanism:** DES interferes with the transformation of Mullerian duct columnar epithelium into squamous epithelium during fetal development.

Q: All of the following are known risk factors for the development of endometrial carcinoma except?

Early menopause. **Explanation:** The development of endometrial carcinoma (specifically Type I) is primarily driven by **unopposed estrogen** stimulation. Estrogen promotes endometrial proliferation, while progesterone acts as a protective agent by inducing differentiation and shedding. **Why Early Menopause is the Correct Answer:** Early menopause is **not** a risk factor; in fact, **late menopause** (after age 52-55) is a significant risk factor. A longer reproductive lifespan means the endometrium is exposed to estrogen for a greater number of years. Conversely, early menopause reduces the total duration of estrogen exposure, thereby decreasing the risk of endometrial cancer. **Analysis of Incorrect Options:** * **Obesity:** This is a major risk factor. In obese postmenopausal women, androstenedione is converted into estrone by the enzyme **aromatase** in peripheral adipose tissue, leading to high levels of endogenous estrogen. * **Family History:** Genetic predisposition plays a role, most notably in **Lynch Syndrome** (Hereditary Non-Polyposis Colorectal Cancer - HNPCC), which carries a 40-60% lifetime risk of endometrial cancer. * **Hormone Replacement Therapy (HRT):** The use of **unopposed estrogen** therapy in women with an intact uterus significantly increases the risk. To mitigate this, progesterone must always be added to the regimen. **High-Yield Clinical Pearls for NEET-PG:** * **Protective Factors:** Combined Oral Contraceptive Pills (COCPs), multiparity, smoking (decreases estrogen levels, though not recommended), and physical activity. * **PCOS:** A common cause of chronic anovulation leading to unopposed estrogen and increased cancer risk. * **Tamoxifen:** Used in breast cancer treatment, it acts as an estrogen agonist on the endometrium, increasing the risk of hyperplasia and carcinoma. * **Most Common Histology:** Endometrioid adenocarcinoma.

Q: Which of the following statements regarding sarcoma botryoides is FALSE?

It is commonly found in elderly women.. **Explanation:** **Sarcoma botryoides** (Embryonal Rhabdomyosarcoma) is a highly malignant tumor derived from primitive mesenchymal cells. 1. **Why Option C is the Correct Answer (The False Statement):** Sarcoma botryoides is a tumor of **infancy and early childhood**, typically occurring in girls **under the age of 5** (peak incidence at 2–3 years). It is almost never seen in elderly women. In older patients, the most common vaginal malignancy is Squamous Cell Carcinoma. 2. **Analysis of Other Options:** * **Option A (Typically seen in the vagina):** In infants and young children, the most common site is the **vagina**. (Note: In older children/adolescents, it may occur in the cervix or urinary bladder). * **Option B (Grape-like clusters):** The name "botryoides" is derived from the Greek word *botrys* (cluster of grapes). Grossly, the tumor appears as edematous, polypoid, friable masses resembling grapes protruding from the introitus. * **Option D (Type of adenocarcinoma):** This is technically a **distractor** in the original question format, as Sarcoma botryoides is a **mesenchymal tumor (sarcoma)**, not an epithelial tumor (adenocarcinoma). However, in the context of identifying the "most false" or primary clinical characteristic for NEET-PG, the age demographic (Option C) is the classic "false" fact tested. **High-Yield Clinical Pearls for NEET-PG:** * **Histology:** Look for the **Cambium layer** (a dense zone of undifferentiated tumor cells immediately beneath the vaginal epithelium). * **Marker:** Cells often show cross-striations and are positive for **Desmin**, **Myogenin**, and **Myo-D1**. * **Presentation:** Often presents as blood-stained vaginal discharge or a "grape-like" mass protruding from the vagina in a toddler.

Question 1

A 30-year-old woman's Pap smear results are provided below. What is your next recommended approach?

Accepted Answer

Advise loop electrosurgical excision procedure

Answer

Continue routine screening

Answer

Hysterectomy

Answer

Cryotherapy

Question 2

A 53-year-old woman with an ovarian tumor presents with breathlessness and right-sided chest pain. The chest X-ray shows obliteration of the right costophrenic angle. What is the most likely diagnosis?

Accepted Answer

Pleurisy

Answer

Pericarditis

Answer

Myocardial infarction

Answer

Parapneumonic effusion

Question 3

Which of the following indications usually warrants the institution of single-agent chemotherapy following evacuation of a hydatidiform mole?

Accepted Answer

A rise in hCG titers

Answer

A plateau of hCG titers for 1 week

Answer

Return of hCG titer to normal at 6 weeks after evacuation

Answer

Appearance of liver metastasis

Question 4

Which ovarian tumor is typically bilateral?

Accepted Answer

Dysgerminoma

Answer

Endodermal sinus tumor

Answer

Immature teratoma

Answer

Embryonal cell carcinoma

Question 5

What is the WHO prognostic score for high-risk gestational trophoblastic neoplasia (GTN)?

Accepted Answer

>= 7

Answer

>= 6

Answer

>= 10

Answer

>= 15

Question 6

Molar pregnancy can be best diagnosed by?

Accepted Answer

Ultrasound study

Answer

Clinical history and examination

Answer

Laparoscopy

Answer

CT Scan

Question 7

The EMA-CO chemotherapy regimen is used in the treatment of which of the following conditions?

Accepted Answer

Gestational trophoblastic neoplasia

Answer

Malignant ovarian germ cell tumor

Answer

Endometrial carcinoma

Answer

Cervical carcinoma

Question 8

A lesion in a female child born to a mother treated with diethylstilbestrol (DES) is most likely to be?

Accepted Answer

Vaginal adenosis

Answer

Sarcoma botryoides

Answer

Cervical erosion

Answer

Endometrial carcinoma

Question 9

All of the following are known risk factors for the development of endometrial carcinoma except?

Accepted Answer

Early menopause

Answer

Obesity

Answer

Family history

Answer

Use of hormone replacement therapy

Question 10

Which of the following statements regarding sarcoma botryoides is FALSE?

Accepted Answer

It is commonly found in elderly women.

Answer

It is typically seen in the vagina.

Answer

Characteristic presentation includes grape-like clusters.

Answer

It is a type of adenocarcinoma.

Gynecologic Oncology — MCQs

Gynecologic Oncology — MCQs

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