Gynecologic Oncology Practice Questions

Q: In microinvasive cervical cancer, what is the most common treatment?

Simple hysterectomy. **Explanation:** Microinvasive cervical cancer is defined as **Stage IA1** (FIGO classification), where the depth of stromal invasion is **≤ 3 mm** and the horizontal spread is ≤ 7 mm. **1. Why Simple Hysterectomy is Correct:** For Stage IA1 disease without lymphovascular space invasion (LVSI), the risk of lymph node metastasis is extremely low (<1%). Therefore, a **Simple (Extrafascial) Hysterectomy** is the standard treatment of choice for women who have completed their childbearing. It removes the entire uterus and cervix, providing a definitive cure with minimal morbidity compared to radical procedures. **2. Why the Other Options are Incorrect:** * **Conization (Option A):** While conization is the treatment of choice for Stage IA1 patients who **desire fertility preservation**, it is not the "most common" or definitive treatment for the general population in this category. * **Laser Therapy (Option B):** Ablative techniques like laser therapy are used for Cervical Intraepithelial Neoplasia (CIN/Pre-cancer) but are contraindicated once invasive cancer (even microinvasive) is diagnosed, as they do not provide a tissue specimen for margin assessment. * **Radical Hysterectomy (Option D):** This involves the removal of parametria and the upper vagina. It is indicated for **Stage IA2** (invasion 3–5 mm) or Stage IA1 with positive LVSI, where the risk of nodal spread is higher. **High-Yield Clinical Pearls for NEET-PG:** * **Stage IA1:** Invasion ≤ 3mm. Treatment: Simple Hysterectomy (or Cone biopsy if fertility is desired). * **Stage IA2:** Invasion 3–5mm. Treatment: Modified Radical Hysterectomy + Pelvic Lymphadenectomy. * **Gold Standard for Diagnosis:** Microinvasion can *only* be diagnosed via a **Cone Biopsy**, not a punch biopsy, as the entire lesion must be mapped to rule out deeper invasion.

Q: A 35-year-old G3P3 with a Pap smear showing high-grade squamous intraepithelial lesion of the cervix (CIN III) has an inadequate colposcopy. Cone biopsy shows squamous cell cancer that has invaded only 1 mm beyond the basement membrane. There are no confluent tongues of tumor, and there is no evidence of lymphatic or vascular invasion. The margins of the cone biopsy specimen are free of disease. What is your diagnosis?

Microinvasive cancer. **Explanation:** The diagnosis is **Microinvasive Squamous Cell Carcinoma (Stage IA1)**. According to the FIGO staging for cervical cancer, Stage IA1 is defined as invasive carcinoma that can be identified only by microscopy, with a maximum depth of invasion **≤ 3 mm**. In this case, the tumor invades only **1 mm** beyond the basement membrane, and the absence of lymphovascular space invasion (LVSI) and clear margins on the cone biopsy confirm this diagnosis. Microinvasive cancer represents a transition point where the malignant cells have breached the basement membrane but have a very low risk of pelvic lymph node metastasis (<1%). **Analysis of Incorrect Options:** * **Option A (Carcinoma of low malignant potential):** This term is typically used for borderline ovarian tumors, not cervical pathology. * **Option C (ASC-US):** This is a cytological category from a Pap smear indicating cells that do not look normal but do not meet the criteria for a definitive lesion. It is a precursor finding, not a histological diagnosis of invasion. * **Option D (Carcinoma in situ):** Also known as CIN III, this refers to full-thickness dysplasia where the basement membrane is **intact**. Once the basement membrane is breached (as the 1 mm invasion indicates here), it is no longer "in situ" but "invasive." **Clinical Pearls for NEET-PG:** * **FIGO Stage IA1:** Invasion ≤ 3 mm depth. Treatment of choice is **Extra-fascial Hysterectomy** (Type A). If the patient desires fertility, a **Cold Knife Conization** with clear margins is sufficient. * **FIGO Stage IA2:** Invasion > 3 mm to ≤ 5 mm. Requires Modified Radical Hysterectomy (Type B) with pelvic lymphadenectomy. * The most important prognostic factor in early-stage cervical cancer is **lymphovascular space invasion (LVSI)**.

Q: What is the treatment of choice for stage 1A grade 1 endometrial carcinoma?

None of the above. ### Explanation The treatment of choice for **Stage 1A Grade 1 endometrial carcinoma** is **Total Extra-fascial Hysterectomy with Bilateral Salpingo-oophorectomy (TAH + BSO)**. Since this surgical management is not listed among the options, "None of the above" is the correct choice. #### Why the Correct Answer is Right Endometrial cancer is primarily a surgically staged disease. Stage 1A Grade 1 represents a low-risk profile where the tumor is limited to the endometrium or invades less than half of the myometrium (<50%) and is well-differentiated. For these patients, surgery (TAH + BSO) is both diagnostic and therapeutic. In most cases of Stage 1A Grade 1, surgery alone is curative, and the 5-year survival rate exceeds 90%. #### Why Other Options are Wrong * **A, B, & C (Radiotherapy/Chemotherapy):** These are considered **adjuvant therapies**. They are reserved for high-risk patients (high grade, deep myometrial invasion, or advanced stages). In Stage 1A Grade 1, the risk of lymph node metastasis or recurrence is extremely low (<2%), making the toxicity of radiation or chemotherapy unnecessary and unjustified. #### NEET-PG High-Yield Pearls * **Standard of Care:** The gold standard for endometrial cancer is TAH + BSO with pelvic and para-aortic lymphadenectomy (though lymphadenectomy may be omitted in very low-risk Stage 1A G1 cases). * **Fertility Sparing:** In young patients wishing to preserve fertility (Stage 1A G1 only), **high-dose Progestogens** (e.g., Megestrol acetate or Levonorgestrel IUD) can be used as an alternative to surgery, provided there is strict follow-up. * **Most Common Type:** Endometrioid adenocarcinoma (Type 1) is the most common histological subtype and is estrogen-dependent. * **Risk Factor:** Obesity is the most significant risk factor due to the peripheral conversion of androstenedione to estrone.

Q: What is the most common ovarian tumor to undergo torsion?

Dermoid cyst. **Explanation:** **1. Why Dermoid Cyst (Mature Cystic Teratoma) is correct:** Dermoid cysts are the most common ovarian tumors to undergo torsion. This high incidence is attributed to two main factors: * **Weight and Composition:** They contain heavy elements like hair, teeth, and sebum, which makes them "top-heavy." * **Mobility:** They are often pedunculated (attached by a stalk) and lack significant adhesions to surrounding pelvic structures, allowing them to rotate freely around their pedicle. Torsion is most frequent when the tumor size is between **5–10 cm**. **2. Why other options are incorrect:** * **Pseudomucinous and Mucinous Cystadenomas:** These are often very large (sometimes filling the entire abdomen). Their massive size and weight usually limit their mobility within the pelvis, making them less likely to rotate compared to the medium-sized dermoid cyst. * **Papillary Cystadenoma:** These are frequently associated with surface projections and potential malignancy, which often leads to the formation of adhesions to the broad ligament or pelvic side walls, thereby fixing the ovary in place and preventing torsion. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common complication of Dermoid Cyst:** Torsion (occurring in ~15% of cases). * **Most common ovarian tumor overall:** Serous cystadenoma. * **Most common germ cell tumor:** Dermoid cyst (Mature cystic teratoma). * **Clinical Presentation:** Sudden onset of acute lower abdominal pain, often associated with nausea and vomiting. * **Management:** Emergency laparoscopy is the gold standard. In reproductive-age women, **detorsion** (untwisting) is preferred over salpingo-oophorectomy, even if the ovary appears dusky, as functional recovery is common.

Q: Regarding vaccination for carcinoma cervix, all of the following statements are true EXCEPT:

Does not require further examinations. **Explanation:** The correct answer is **A (Does not require further examinations)** because HPV vaccination does not eliminate the need for cervical cancer screening. **1. Why Option A is the correct (False) statement:** HPV vaccines (Bivalent, Quadrivalent, or Nonavalent) protect against the most common high-risk strains (HPV 16 and 18), which cause approximately 70% of cervical cancers. However, they do not cover all oncogenic HPV types. Therefore, vaccinated women must still undergo routine **Pap smears or HPV DNA testing** according to standard guidelines to detect lesions caused by non-vaccine strains. **2. Analysis of other options:** * **Option B:** HPV vaccines are inactivated (recombinant) vaccines. They can be safely co-administered with other vaccines (live or inactivated), such as Hepatitis B or Tdap, provided they are given at different anatomical sites. * **Option C:** While both are highly effective, some studies suggest the **Bivalent vaccine (Cervarix)** may produce higher antibody titers and offer better cross-protection against non-vaccine types (like HPV 31 and 45) compared to the **Quadrivalent vaccine (Gardasil)**, though the clinical significance of this in preventing cancer is debated. * **Option D:** The standard three-dose schedule for individuals aged 15 and older is **0, 2, and 6 months** (for Gardasil) or 0, 1, and 6 months (for Cervarix), administered intramuscularly in the deltoid. **High-Yield Clinical Pearls for NEET-PG:** * **Target Age:** Best given before the first sexual encounter (9–14 years). * **Two-dose Schedule:** For children aged 9–14 years, only two doses are required (0 and 6 months). * **Catch-up Vaccination:** Recommended up to age 26; can be considered up to age 45 based on shared clinical decision-making. * **Contraindication:** Pregnancy (though it is not an indication for termination if accidentally administered). Safe during breastfeeding.

Q: What is the most common histology of carcinoma of the endometrium?

Adenocarcinoma. **Explanation:** **Endometrial carcinoma** is the most common gynecological malignancy in developed countries and the second most common in India (after cervical cancer). **Why Adenocarcinoma is correct:** The endometrium is a mucosal lining composed of glandular epithelium. Therefore, malignancies arising from this tissue are predominantly **adenocarcinomas**. Specifically, the **Endometrioid** subtype of adenocarcinoma accounts for approximately **75-80%** of all cases. It is typically "Type I" endometrial cancer, which is estrogen-dependent and often preceded by endometrial hyperplasia. **Why other options are incorrect:** * **Squamous cell carcinoma:** This is extremely rare as a primary endometrial cancer. Squamous cells are not native to the endometrium; they usually occur due to squamous metaplasia or extension from the cervix. * **Clear cell carcinoma:** This is a "Type II" endometrial cancer. It is highly aggressive and carries a poor prognosis, but it accounts for only about **1-5%** of cases. * **Anaplastic carcinoma:** This represents an undifferentiated, rare, and highly malignant form of the disease, occurring in a very small percentage of patients. **High-Yield Clinical Pearls for NEET-PG:** * **Most common subtype:** Endometrioid Adenocarcinoma. * **Most common symptom:** Postmenopausal bleeding (PMB). * **Risk Factors:** Obesity (most significant), nulliparity, early menarche, late menopause, and Tamoxifen use. * **Protective Factors:** Combined Oral Contraceptive Pills (COCPs) and smoking (though smoking increases other risks, it lowers estrogen levels). * **Investigation of choice:** Fractional Curettage or Pipelle biopsy (Gold standard for diagnosis). * **Staging:** Endometrial cancer is **Surgically Staged** (FIGO staging).

Q: All of the following are germ cell tumors except?

Mesonephroid tumors. **Explanation:** The classification of ovarian tumors is based on the cell of origin. Ovarian tumors are primarily divided into Surface Epithelial, Germ Cell, and Sex Cord-Stromal tumors. **1. Why Mesonephroid tumors is the correct answer:** Mesonephroid tumors, also known as **Clear Cell Carcinomas**, are a subtype of **Surface Epithelial-Stromal tumors**. They are derived from the ovarian surface epithelium (coelomic epithelium) and are often associated with endometriosis. Since they are epithelial in origin, they are not classified as germ cell tumors. **2. Analysis of Incorrect Options (Germ Cell Tumors):** Germ cell tumors (GCTs) arise from the primordial germ cells of the ovary. * **Dysgerminoma:** The most common malignant germ cell tumor in women. It is the female counterpart of the male seminoma and is highly radiosensitive. * **Endodermal Sinus Tumor (Yolk Sac Tumor):** A highly aggressive malignant GCT characterized by the production of **Alpha-Fetoprotein (AFP)** and the presence of **Schiller-Duval bodies** on histology. * **Teratoma:** The most common germ cell tumor overall. It can be mature (benign/dermoid cyst) or immature (malignant), containing tissues from all three germ layers (ectoderm, mesoderm, and endoderm). **Clinical Pearls for NEET-PG:** * **Most common ovarian tumor:** Serous Cystadenoma (Epithelial). * **Most common malignant GCT:** Dysgerminoma (Marker: LDH). * **Yolk Sac Tumor Marker:** AFP. * **Choriocarcinoma Marker:** beta-hCG. * **Schiller-Duval bodies** are pathognomonic for Yolk Sac Tumors. * **Call-Exner bodies** are characteristic of Granulosa Cell Tumors (Sex cord-stromal).

Question 1

What is the indication for adjuvant radiotherapy in endometrial cancer?

Accepted Answer

Cervical involvement, lymph node involvement, and carcinoma in situ

Answer

Lymph node involvement and carcinoma in situ

Answer

Cervical involvement, carcinoma in situ, and papillary serous tumor

Answer

Lymph node involvement, papillary serous tumor, and estrogen receptor positive

Question 2

In microinvasive cervical cancer, what is the most common treatment?

Accepted Answer

Simple hysterectomy

Answer

Conization

Answer

Laser therapy

Answer

Radical hysterectomy

Question 3

A 35-year-old G3P3 with a Pap smear showing high-grade squamous intraepithelial lesion of the cervix (CIN III) has an inadequate colposcopy. Cone biopsy shows squamous cell cancer that has invaded only 1 mm beyond the basement membrane. There are no confluent tongues of tumor, and there is no evidence of lymphatic or vascular invasion. The margins of the cone biopsy specimen are free of disease. What is your diagnosis?

Accepted Answer

Microinvasive cancer

Answer

Carcinoma of low malignant potential

Answer

Atypical squamous cells of undetermined significance

Answer

Carcinoma in situ

Question 4

What is the treatment of choice for stage 1A grade 1 endometrial carcinoma?

Accepted Answer

None of the above

Answer

Radiotherapy

Answer

Chemotherapy

Answer

Chemotherapy plus radiotherapy

Question 5

Endocervical curettage shows malignant cells in a 40-year-old lady. What is the next line of management?

Accepted Answer

Cone biopsy

Answer

Pap smear

Answer

Colposcopy

Answer

Repeat procedure and if positive, hysterectomy

Question 6

What is the most common ovarian tumor to undergo torsion?

Accepted Answer

Dermoid cyst

Answer

Pseudomucinous cystadenoma

Answer

Papillary cystadenoma

Answer

Mucinous cystadenoma

Question 7

Regarding vaccination for carcinoma cervix, all of the following statements are true EXCEPT:

Accepted Answer

Does not require further examinations

Answer

Can be taken with other live vaccines at a different site

Answer

Bivalent vaccine is more efficient than Quadrivalent

Answer

Administered intramuscularly at 0, 2, and 6 months

Question 8

What is the best method for screening for cancer of the cervix?

Accepted Answer

Pap smear

Answer

Colposcopy

Answer

Biopsy

Answer

Colpomicroscopy

Question 9

What is the most common histology of carcinoma of the endometrium?

Accepted Answer

Adenocarcinoma

Answer

Squamous cell

Answer

Clear cell

Answer

Anaplastic carcinoma

Question 10

All of the following are germ cell tumors except?

Accepted Answer

Mesonephroid tumors

Answer

Teratoma

Answer

Endodermal sinus tumor

Answer

Dysgerminoma

Gynecologic Oncology — MCQs

Gynecologic Oncology — MCQs

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