Reproductive Pathology Practice Questions

Q: A 35-year-old female underwent hysterectomy, which revealed specific gross and histological features. What is the most likely diagnosis?

Leiomyoma. ***Leiomyoma*** - **Gross features** include **well-circumscribed**, **whorled**, **white-gray nodules** that are firm and rubbery in consistency. - **Histologically** shows **interlacing smooth muscle bundles** with **minimal nuclear atypia** and **low mitotic index** (<10 mitoses per 10 HPF). *Carcinoma endometrium* - **Gross appearance** typically shows **friable**, **hemorrhagic**, or **necrotic tissue** rather than well-circumscribed nodules. - **Histologically** demonstrates **malignant glandular epithelium** with **nuclear pleomorphism** and **loss of normal architecture**. *Malignant mixed Mullerian tumor* - **Gross features** include **large**, **polypoid**, **hemorrhagic masses** that are often **necrotic** and **friable**. - **Histologically** contains both **malignant epithelial** and **mesenchymal components**, unlike the homogeneous smooth muscle appearance. *Leiomyosarcoma* - **Gross appearance** shows **areas of coagulative necrosis**, **hemorrhage**, and **soft consistency** unlike the firm whorled pattern. - **Histologically** exhibits **high mitotic rate** (>10 mitoses per 10 HPF), **marked nuclear atypia**, and **coagulative tumor cell necrosis**.

Q: Schiller-Duval bodies are seen in which of the following tumor types?

Yolk sac tumor. **Explanation:** **Schiller-Duval bodies** are the pathognomonic histological hallmark of **Yolk Sac Tumors** (also known as Endodermal Sinus Tumors). These structures consist of a central capillary surrounded by visceral and parietal layers of neoplastic cells, mimicking a primitive glomerulus. 1. **Why Yolk Sac Tumor is correct:** These tumors are the most common testicular germ cell tumor in children [1]. They characteristically produce **Alpha-Fetoprotein (AFP)**, which serves as a vital serum marker for diagnosis and monitoring. Histologically, the presence of Schiller-Duval bodies is definitive, though they are only present in about 50% of cases. 2. **Why other options are incorrect:** * **Teratoma:** Characterized by tissues derived from all three germ layers (ectoderm, mesoderm, endoderm), such as cartilage, hair, or intestinal epithelium [1]. * **Seminoma:** The most common germ cell tumor in adults. Histology shows large, uniform cells with clear cytoplasm (“fried-egg appearance”) and lymphocytic infiltration in the stroma [1]. * **Choriocarcinoma:** A highly malignant tumor characterized by the proliferation of cytotrophoblasts and syncytiotrophoblasts [1]. It is associated with markedly elevated **hCG** levels and lacks Schiller-Duval bodies. **High-Yield Clinical Pearls for NEET-PG:** * **Tumor Marker:** AFP is elevated in Yolk Sac Tumors; hCG is elevated in Choriocarcinoma. * **Hyaline Droplets:** Besides Schiller-Duval bodies, Yolk Sac Tumors often show eosinophilic, PAS-positive hyaline droplets. * **Age Factor:** If a testicular mass is presented in a child under 3 years old, Yolk Sac Tumor is the most likely diagnosis [1]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lower Urinary Tract and Male Genital System, pp. 979-980.

Q: Which of the following benign breast lesions is associated with a moderately increased risk of invasive breast carcinoma?

Atypical lobular hyperplasia. **Explanation:** The risk of developing invasive breast carcinoma is categorized based on the histological features of benign breast lesions. This classification is a high-yield topic for NEET-PG. **1. Why Atypical Lobular Hyperplasia (ALH) is correct:** ALH falls under the category of **Atypical Hyperplasia (Proliferative disease with atypia)**. These lesions possess some, but not all, features of carcinoma in situ [1]. They are associated with a **moderately increased risk (4 to 5-fold)** of developing invasive cancer in either breast [1]. This category also includes Atypical Ductal Hyperplasia (ADH). **2. Analysis of Incorrect Options:** * **Sclerosing adenosis (Option A):** This is a **Proliferative disease without atypia**. It carries only a **mildly increased risk (1.5 to 2-fold)**. Other examples include radial scars and complex sclerosing lesions. * **Apocrine metaplasia (Option C):** This is a feature of **Non-proliferative breast changes** (Fibrocystic changes). It carries **no increased risk** of malignancy. * **Squamous metaplasia (Option D):** Usually seen in the lactiferous ducts (e.g., Zuska’s disease/SMLO), it is a reactive process and is **not associated** with an increased risk of invasive carcinoma. **Clinical Pearls for NEET-PG:** * **No Risk (1x):** Cysts, apocrine metaplasia, mild hyperplasia, fibroadenoma (without complex features). * **Slight Risk (1.5–2x):** Sclerosing adenosis, papillomatosis, moderate/florid hyperplasia without atypia. * **Moderate Risk (4–5x):** ADH and ALH [1]. * **High Risk (8–10x):** LCIS and DCIS (Carcinoma in situ). * **Note:** If a patient with atypical hyperplasia has a positive family history, the risk can increase up to 10-fold. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Breast, pp. 1054-1056.

Q: All changes occur in a fibroid uterus. Except?

Squamous metaplasia. **Explanation:** The correct answer is **Squamous metaplasia**. Leiomyomas (fibroids) are benign tumors derived from the **smooth muscle cells** of the myometrium [1]. Squamous metaplasia is a process where one adult epithelial cell type is replaced by another (e.g., columnar to squamous). Since fibroids are mesenchymal (connective tissue) tumors and not epithelial, they do not undergo squamous metaplasia. Squamous metaplasia is typically seen in the cervix or the endometrial lining, but not within the substance of a leiomyoma. **Analysis of Incorrect Options:** * **Atrophy (A):** Fibroids are estrogen-dependent. Following menopause or during treatment with GnRH analogues, the lack of estrogen leads to a reduction in cell size (atrophy) and shrinkage of the tumor. * **Hyaline Degeneration (C):** This is the **most common** type of degeneration in fibroids. The smooth muscle is replaced by homogenous, eosinophilic collagenous tissue [2]. * **Calcification (D):** Often occurring after menopause (secondary to circulatory changes), this is known as "calcareous degeneration." It results in a "womb stone" appearance on X-ray. **Clinical Pearls for NEET-PG:** * **Most common degeneration:** Hyaline degeneration. * **Most common degeneration during pregnancy:** Red degeneration (Carneous degeneration), caused by rapid growth leading to venous thrombosis and infarction. * **Malignant transformation:** Leiomyosarcomas almost always arise *de novo* and NOT from pre-existing fibroids. [2] * **Cystic degeneration:** Occurs when hyaline tissue liquefies; often mimics pregnancy or ovarian cysts on ultrasound. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Neoplasia, pp. 276-278. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1024-1025.

Q: How does seminoma typically spread?

Lymphatics. **Explanation:** **1. Why Lymphatics is Correct:** Seminoma, the most common germ cell tumor (GCT) of the testis, follows a predictable pattern of spread. Like most carcinomas (and unlike most sarcomas), seminomas primarily spread via the **lymphatic system**. The lymphatic drainage of the testes follows the path of the testicular arteries back to their origin from the aorta. Therefore, the primary site of metastasis is the **retroperitoneal para-aortic lymph nodes** [1]. **2. Why Other Options are Incorrect:** * **Hematogenous route:** While non-seminomatous germ cell tumors (NSGCTs), particularly choriocarcinoma, frequently spread via the blood to the lungs and liver, seminomas rarely do so in the early stages [1]. * **Direct route/Spermatic cord:** While local invasion into the tunica albuginea or spermatic cord can occur (T-staging), it is not the *typical* or primary mode of systemic dissemination. **3. NEET-PG High-Yield Pearls:** * **Lymphatic Exception:** If a patient has a history of orchiopexy or scrotal surgery, the lymphatic drainage may shift to the **inguinal lymph nodes** instead of the para-aortic nodes. * **Radiosensitivity:** Seminomas are exquisitely **radiosensitive** and have an excellent prognosis (95% cure rate in early stages). * **Tumor Markers:** Seminomas may show elevated **hCG** (if syncytiotrophoblasts are present) but **never** show elevated AFP [2]. An elevated AFP in a suspected seminoma automatically reclassifies it as a Mixed Germ Cell Tumor. * **Microscopy:** Look for "Fried egg" appearance (clear cytoplasm, central nuclei) and fibrous septa infiltrated with **T-lymphocytes** [2]. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Diseases Of The Urinary And Male Genital Tracts, pp. 510-512. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lower Urinary Tract and Male Genital System, pp. 980-982.

Question 1

What is the most common primary tumor to cause a Krukenberg tumor?

Accepted Answer

Gastric adenocarcinoma

Answer

Ovarian cancer

Answer

Hepatocellular carcinoma

Answer

Renal cell carcinoma

Question 2

Which of the following markers is NOT typically elevated in a testicular teratoma?

Accepted Answer

Carcinoembryonic antigen (CEA)

Answer

Alpha-fetoprotein (AFP)

Answer

Human chorionic gonadotropin (HCG)

Answer

Lactate dehydrogenase (LDH)

Question 3

A 35-year-old female underwent hysterectomy, which revealed specific gross and histological features. What is the most likely diagnosis?

Accepted Answer

Leiomyoma

Answer

Carcinoma endometrium

Answer

Malignant mixed Mullerian tumor

Answer

Leiomyosarcoma

Question 4

Schiller-Duval bodies are seen in which of the following tumor types?

Accepted Answer

Yolk sac tumor

Answer

Teratoma

Answer

Seminoma

Answer

Choriocarcinoma

Question 5

Which of the following benign breast lesions is associated with a moderately increased risk of invasive breast carcinoma?

Accepted Answer

Atypical lobular hyperplasia

Answer

Sclerosing adenosis

Answer

Apocrine metaplasia

Answer

Squamous metaplasia

Question 6

All changes occur in a fibroid uterus. Except?

Accepted Answer

Squamous metaplasia

Answer

Atrophy

Answer

Hyaline degeneration

Answer

Calcification

Question 7

What is the histological type of cervical cancer that is most sensitive to radiotherapy?

Accepted Answer

Squamous cell carcinoma

Answer

Adenocarcinoma

Answer

Endometrioid carcinoma

Answer

Mixed variety

Question 8

How does seminoma typically spread?

Accepted Answer

Lymphatics

Answer

Hematogenous route

Answer

Direct route

Answer

Directly via the spermatic cord

Question 9

A 30-year-old patient presents with testicular hypoechoic mass and back pain. Which tumor marker is most appropriate?

Accepted Answer

AFP (Alpha-fetoprotein)

Answer

Calcitonin

Answer

CA 19-9

Answer

CEA (Carcinoembryonic antigen)

Question 10

Seminoma is carcinoma of:

Accepted Answer

Testes

Answer

Kidney

Answer

Urinary bladder

Answer

Penis

Reproductive Pathology — MCQs

Reproductive Pathology — MCQs

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