Reproductive Pathology — MCQs

A 30-year-old female presents with a palpable mass in her left breast that has been steadily increasing in size over the past year. On examination, the mass is well-circumscribed, freely mobile, and measures approximately 5.7 cm in its greatest dimension. A core needle biopsy is performed. What is the most probable diagnosis?

Q65Easy

Which of the following is NOT a tumor marker for testicular tumors?

Q66Easy

Corkscrew shaped endometrial glands are seen in which phase of the menstrual cycle?

Q67Easy

Reinke crystalloids can be seen in which of the following sex cord-stromal tumors?

Q68Medium

Which tumor typically presents with a grape-like cluster appearance and consistency?

Q69Medium

What is the first histological sign of ovulation?

Q70Medium

Which of the following is NOT true about atrophic testis?

Reproductive Pathology Indian Medical PG Practice Questions and MCQs

Question 61: What is the most common site of metastasis for prostate cancer?

A. Skull
B. Femur
C. Lumbar spine (Correct Answer)
D. Sacrum

Explanation: **Explanation:** Prostate cancer has a high predilection for hematogenous spread to the axial skeleton, specifically causing **osteoblastic (bone-forming) metastases** [1]. **Why the Lumbar Spine is Correct:** The most common site of metastasis for prostate cancer is the **lumbar spine**. This occurs primarily due to the **Batson venous plexus**, a valveless system of veins that connects the deep pelvic veins (draining the prostate) directly to the internal vertebral venous plexus. Because these veins lack valves, changes in intra-abdominal pressure allow cancer cells to embolize retrograde directly into the lumbar vertebrae, bypassing the caval system and the lungs. **Analysis of Incorrect Options:** * **A. Skull:** While prostate cancer can spread to the skull, it is a late-stage occurrence and significantly less common than involvement of the axial skeleton. * **B. Femur:** The proximal femur is a frequent site for skeletal metastasis, but it ranks below the spine and pelvis in terms of primary frequency. * **C. Sacrum:** The sacrum is frequently involved alongside the pelvis and lumbar spine, but statistically, the lumbar vertebrae are the most common initial site of skeletal deposition. **High-Yield Clinical Pearls for NEET-PG:** * **Osteoblastic Lesions:** Prostate cancer is the classic cause of radiodense (white) osteoblastic metastases in males [1]. (Contrast this with Multiple Myeloma or Lung Cancer, which are typically osteolytic). * **Biomarker:** **Prostate-Specific Antigen (PSA)** is used for monitoring, but **Acid Phosphatase** was historically used to indicate spread beyond the capsule. * **Sequence of Spread:** The typical order of bone involvement is: Lumbar spine > Proximal femur > Pelvis > Thoracic spine > Ribs. * **Batson Plexus:** Always remember this anatomical pathway for any question regarding the spread of pelvic malignancies to the spine without pulmonary involvement. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Osteoarticular And Connective Tissue Disease, pp. 671-672.

Question 62: A histopathological examination of an excision specimen from a lesion on the dorsal surface of the penis reveals a papillary lesion with clear vacuolization of epithelial cells on the surface and extension of the hyperplastic epithelium into the underlying tissue. What is the possible diagnosis?

A. Bowen's disease
B. Erythroplasia of Queyrat
C. Condyloma acuminatum
D. Verrucous carcinoma (Correct Answer)

Explanation: **Explanation:** The correct diagnosis is **Verrucous Carcinoma** (also known as Buschke-Löwenstein tumor when occurring in the anogenital region). **Why Verrucous Carcinoma is correct:** The histopathological description provides two pathognomonic features: 1. **Papillary/Exophytic growth:** It presents as a well-differentiated squamous lesion with a "wart-like" architecture [1]. 2. **"Pushing" Border:** The phrase "extension of hyperplastic epithelium into underlying tissue" refers to the characteristic broad, bulbous, "pushing" invasion rather than the irregular, jagged nests seen in typical squamous cell carcinoma. 3. **Koilocytic-like changes:** The "clear vacuolization" of surface epithelial cells is often seen in these HPV-associated lesions [1]. **Why other options are incorrect:** * **Bowen’s Disease:** This is Squamous Cell Carcinoma (SCC) *in situ* of the penile shaft. It presents as a leukoplakic plaque. Histologically, it shows full-thickness dysplasia but **no invasion** into the underlying tissue [2], [3]. * **Erythroplasia of Queyrat:** This is also SCC *in situ* but specifically involves the **glans penis or prepuce**, presenting as a velvety red plaque [2]. Like Bowen’s, it lacks the invasive "pushing" component [3]. * **Condyloma Acuminatum:** While it shows papillary growth and vacuolization (koilocytosis), it is a benign lesion that **does not invade** the underlying stroma [1]. **NEET-PG High-Yield Pearls:** * **Verrucous Carcinoma** is a low-grade variant of SCC. It is locally aggressive but **rarely metastasizes**. * **Etiology:** Strongly associated with **HPV types 6 and 11** [1]. * **Clinical Appearance:** Often described as a "cauliflower-like" mass. * **Key Histology:** "Pushing" margins, minimal cytologic atypia, and prominent hyperkeratosis. **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. 974-975. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Diseases Of The Urinary And Male Genital Tracts, pp. 505-506. [3] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. (Basic Pathology) introduces the student to key general principles of pathology, both as a medical science and as a clinical activity with a vital role in patient care. Part 2 (Disease Mechanisms) provides fundamental knowledge about the cellular and molecular processes involved in diseases, providing the rationale for their treatment. Part 3 (Systematic Pathology) deals in detail with specific diseases, with emphasis on the clinically important aspects., pp. 209-210.

Question 63: What is the most common testicular tumor in the elderly?

A. Seminoma
B. Spermatocytic seminoma
C. Yolk sac tumor
D. Lymphoma (Correct Answer)

Explanation: **Explanation:** In the context of testicular pathology, the patient's age is the most critical diagnostic clue. While germ cell tumors (GCTs) dominate in younger populations, **Lymphoma** (specifically Diffuse Large B-Cell Lymphoma) is the most common testicular malignancy in men aged **over 60**. It is often bilateral (synchronous or metachronous) and carries a poor prognosis due to its propensity for systemic spread. **Analysis of Options:** * **A. Seminoma:** This is the most common *primary germ cell tumor* overall, but it typically peaks between **30–40 years** of age. It is rare in the elderly. * **B. Spermatocytic Seminoma:** Now termed "Spermatocytic Tumor," this is a distinct entity from classic seminoma. While it occurs in older men (median age 50+), it is **extremely rare** compared to the incidence of testicular lymphoma. It is characterized by a lack of association with GCNIS and an excellent prognosis. * **C. Yolk Sac Tumor:** This is the most common testicular tumor in **infants and children** (up to 3 years). It is marked by elevated Alpha-Fetoprotein (AFP) and Schiller-Duval bodies. **High-Yield Clinical Pearls for NEET-PG:** * **Age-wise distribution:** * Infants: Yolk Sac Tumor. * 15–35 years: Mixed Germ Cell Tumors / Teratoma. * 30–40 years: Seminoma. * **>60 years: Lymphoma.** * Testicular lymphoma is the most common cause of a **bilateral** testicular mass in elderly men. * Unlike GCTs, lymphoma often involves the spermatic cord and epididymis.

Question 64: A 30-year-old female presents with a palpable mass in her left breast that has been steadily increasing in size over the past year. On examination, the mass is well-circumscribed, freely mobile, and measures approximately 5.7 cm in its greatest dimension. A core needle biopsy is performed. What is the most probable diagnosis?

A. Fibroadenoma
B. Ductal Carcinoma In Situ (DCIS)
C. Intraductal papilloma
D. Giant fibroadenoma (Correct Answer)

Explanation: ### Explanation **Correct Answer: D. Giant fibroadenoma** **Why it is correct:** The clinical presentation describes a classic **Fibroadenoma**—the most common benign breast tumor in young women [1]. It is typically characterized as a well-circumscribed, painless, and highly mobile ("breast mouse") mass [1]. The key differentiator in this case is the **size**. While standard fibroadenomas are usually 2–3 cm, a fibroadenoma exceeding **5 cm** in diameter or weighing more than **500 grams** is classified as a **Giant Fibroadenoma**. At 5.7 cm, this mass fits the diagnostic criteria for the giant variant [1]. **Why the other options are incorrect:** * **A. Fibroadenoma:** While pathologically identical, "Giant Fibroadenoma" is the more specific clinical diagnosis given the size (>5 cm). * **B. Ductal Carcinoma In Situ (DCIS):** Usually presents as microcalcifications on mammography and is rarely palpable. Malignant lesions are typically fixed, hard, and irregular, unlike the mobile, well-circumscribed mass described here. * **C. Intraductal papilloma:** Typically presents with serous or bloody nipple discharge and is usually small and retroareolar, rather than a large, mobile mass. **High-Yield Clinical Pearls for NEET-PG:** * **Phyllodes Tumor vs. Giant Fibroadenoma:** This is a common differential. Phyllodes tumors also grow large but typically occur in older age groups (40s–50s) and show characteristic "leaf-like" projections and increased stromal cellularity on histology. * **Histology:** Fibroadenomas show a dual population of cells: **epithelial** (ducts) and **stromal** (connective tissue) [1]. They can exhibit *intracanalicular* (stroma compresses ducts into slits) or *pericanalicular* (ducts remain patent) patterns. * **Estrogen Sensitivity:** These tumors are hormone-sensitive; they may enlarge during pregnancy and regress after menopause. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 448-449.

Question 65: Which of the following is NOT a tumor marker for testicular tumors?

A. HCG
B. AFP
C. CEA (Correct Answer)
D. Alpha 1 antitrypsin

Explanation: **Explanation:** In testicular germ cell tumors (GCTs), tumor markers are essential for diagnosis, staging, and monitoring treatment response. **Why CEA is the correct answer:** **Carcinoembryonic Antigen (CEA)** is a non-specific oncofetal antigen primarily associated with adenocarcinomas of the gastrointestinal tract (colon, pancreas) and certain lung or breast cancers. It is **not** produced by testicular germ cell tumors and therefore has no clinical utility in their management. **Analysis of other options:** * **HCG (Human Chorionic Gonadotropin):** This is the most sensitive marker for **Choriocarcinoma** (100% of cases) [1]. It is also elevated in about 10-15% of pure seminomas (due to syncytiotrophoblastic giant cells) [2]. * **AFP (Alpha-Fetoprotein):** This is the hallmark marker for **Yolk Sac Tumors** (Endodermal Sinus Tumors). Crucially, AFP is **never** elevated in pure seminomas; its elevation in a suspected seminoma indicates a mixed germ cell component [1]. * **Alpha-1 Antitrypsin (AAT):** While less commonly used than HCG or AFP, AAT is histologically detectable in **Yolk Sac Tumors** and can be used as a minor immunohistochemical marker for this subtype. **High-Yield NEET-PG Pearls:** 1. **LDH (Lactate Dehydrogenase):** Though non-specific, LDH levels correlate with the overall tumor burden and growth rate in GCTs. 2. **Seminoma Rule:** If AFP is elevated, the diagnosis is **not** a pure seminoma (it is a Non-Seminomatous GCT) [1]. 3. **Schiller-Duval Bodies:** Pathognomonic histological feature of Yolk Sac Tumors, which secrete AFP. 4. **Most common mixed GCT:** Teratoma + Embryonal carcinoma + Yolk sac tumor [1]. **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. 510-513. [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 66: Corkscrew shaped endometrial glands are seen in which phase of the menstrual cycle?

A. Early proliferative phase
B. Late proliferative phase
C. Early secretory phase
D. Late secretory phase (Correct Answer)

Explanation: **Explanation:** The morphology of the endometrial glands undergoes predictable changes under the influence of estrogen and progesterone. The correct answer is **Late secretory phase** because this phase is characterized by maximal glandular tortuosity [1]. 1. **Why Late Secretory Phase is correct:** Following ovulation, progesterone from the corpus luteum causes the endometrial glands to become increasingly coiled and dilated to maximize surface area for nutrient secretion. By the late secretory phase (days 20–28), these glands achieve a classic **"corkscrew" or "saw-tooth" appearance** [1]. The stroma also becomes edematous and undergoes a pre-decidual reaction. 2. **Why other options are incorrect:** * **Early/Late Proliferative Phase:** Under estrogen influence, glands are initially tubular, thin, and straight [1]. While they become slightly more coiled in the late proliferative phase, they remain narrow and lack the dramatic "corkscrew" morphology. * **Early Secretory Phase:** This phase is histologically defined by **sub-nuclear vacuoles** [1] (the first sign of ovulation). While the glands begin to coil, the prominent corkscrew shape is not yet fully developed. **High-Yield Pearls for NEET-PG:** * **Dating the Endometrium:** The most reliable sign of recent ovulation is the presence of sub-nuclear vacuoles (Day 16-17) [1]. * **Arias-Stella Reaction:** Hypersecretory glands with enlarged, hyperchromatic nuclei; seen in pregnancy (normal) or ectopic pregnancy. * **Chronic Endometritis:** Diagnosed by the presence of **Plasma Cells** in the endometrial stroma. * **Swiss-Cheese Appearance:** Characteristic of Cystic Glandular Hyperplasia (due to unopposed estrogen). **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1011-1013.

Question 67: Reinke crystalloids can be seen in which of the following sex cord-stromal tumors?

A. Leydig cell tumor (Correct Answer)
B. Granulosa cell tumor
C. Gonadoblastoma
D. Thecoma

Explanation: **Explanation:** **1. Why Leydig Cell Tumor is correct:** Reinke crystalloids are the pathognomonic histological hallmark of **Leydig cell tumors** [1] (a subtype of sex cord-stromal tumors). These are large, eosinophilic, rod-shaped or rectangular cytoplasmic inclusions [4]. While they are highly specific, they are only present in approximately 25–40% of cases. Leydig cell tumors typically present with androgen excess (precocious puberty in boys) or occasionally estrogen excess (gynecomastia in adults) [1]. **2. Why the other options are incorrect:** * **Granulosa cell tumor:** Characterized by **Call-Exner bodies** (small follicles filled with eosinophilic material) and "coffee-bean" nuclei (longitudinal nuclear grooves) [3]. They are the most common estrogen-producing ovarian tumors [2]. * **Gonadoblastoma:** A mixed germ cell-sex cord-stromal tumor usually arising in dysgenetic gonads. It is characterized by nests of germ cells and sex cord elements with prominent **hyaline basement membrane-like material** (calcifications/psammoma bodies are common). * **Thecoma:** These are benign stromal tumors composed of spindle cells with lipid-laden cytoplasm [3]. They do not contain crystalloids but are often associated with estrogen production [3]. **3. High-Yield Facts for NEET-PG:** * **Reinke Crystalloids:** Also found in **Hilus cell tumors** of the ovary (the female counterpart of Leydig cell tumors) [4]. * **Golden-brown appearance:** On gross examination, Leydig cell tumors appear yellow-to-brown due to high lipid/lipofuscin content [1]. * **Tumor Marker:** Inhibin is a useful immunohistochemical marker for most sex cord-stromal tumors, including Leydig cell tumors [2]. * **Crystalloids of Charcot-Bottcher:** These are found in **Sertoli cells** (do not confuse with Reinke crystalloids). **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. 513-514. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1036-1037. [3] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Female Genital Tract Disease, pp. 481-482. [4] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1037-1038.

Question 68: Which tumor typically presents with a grape-like cluster appearance and consistency?

A. Embryonal rhabdomyosarcoma (Correct Answer)
B. Embryonal cell carcinoma
C. Adenocarcinoma
D. Clear cell carcinoma

Explanation: ### Explanation **Correct Answer: A. Embryonal rhabdomyosarcoma** **Embryonal rhabdomyosarcoma**, specifically the **Sarcoma Botryoides** variant, is the most common soft tissue sarcoma in infants and children (typically under age 5). [1] The term "botryoides" is derived from the Greek word *botrys*, meaning "a cluster of grapes." This characteristic appearance occurs because the tumor grows in hollow, mucosal-lined structures (like the vagina or urinary bladder), where it expands into the lumen as soft, bulky, gelatinous, polypoid masses resembling grapes. [2] Histologically, it is characterized by the **Cambium layer** (a dense zone of rhabdomyoblasts beneath the epithelium) and the presence of **cross-striations** in the cytoplasm. [2] **Why the other options are incorrect:** * **B. Embryonal cell carcinoma:** This is a highly aggressive germ cell tumor (common in the testes) characterized by pleomorphic cells in sheets or tubules. [3] It typically presents as a solid, hemorrhagic mass, not a grape-like cluster. * **C. Adenocarcinoma:** This refers to a malignancy of glandular epithelium. In the female reproductive tract, it usually presents as an endophytic or exophytic mass with a firm or friable consistency, lacking the "botryoid" morphology. * **D. Clear cell carcinoma:** Classically associated with *in utero* exposure to **Diethylstilbestrol (DES)**, this tumor presents as a solid or cystic mass. Histologically, it shows "hobnail cells" and clear cytoplasm, but not grape-like clusters. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** A young girl (infant/toddler) with a "grape-like" mass protruding from the vagina. * **Histology Marker:** Desmin (+), Myogenin (+), and MyoD1 (+). [2] * **Key Feature:** The **Cambium layer** is a pathognomonic histological finding. * **Location:** In females, it arises in the vagina (infants) or cervix (older patients); in males, it can occur in the bladder or near the prostate. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1004-1005. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Bones, Joints, and Soft Tissue Tumors, pp. 1224-1225. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1035-1036.

Question 69: What is the first histological sign of ovulation?

A. Vacuoles at the apical portion of secretory nonciliated cells.
B. Cessation of glandular cell mitosis.
C. Absent glycoprotein in secretory non-ciliated cells.
D. Subnuclear vacuoles and pseudostratification in the basal portion of glandular epithelium. (Correct Answer)

Explanation: **Explanation:** The correct answer is **D**. The histological changes in the endometrium are strictly governed by the hormonal fluctuations of the menstrual cycle. **Why it is correct:** Following ovulation (typically Day 14), the ruptured follicle becomes the corpus luteum and begins secreting **progesterone**. Progesterone induces the transition from the proliferative phase to the secretory phase. The **earliest histological hallmark** of this transition, appearing approximately 36–48 hours after ovulation (Day 16), is the appearance of **subnuclear vacuoles** (glycoprotein-rich vacuoles located below the nucleus) within the glandular epithelium [1]. This is often accompanied by a temporary "pseudostratification" as the nuclei are pushed upward by the accumulating vacuoles [1]. **Why the other options are incorrect:** * **Option A:** In the late secretory phase, vacuoles move from the subnuclear position to the **apical** portion before being discharged into the lumen [1]. This occurs much later than the initial post-ovulatory sign. * **Option B:** While mitosis does eventually cease due to the anti-proliferative effects of progesterone, it is a gradual process and not the *first* identifiable histological change. * **Option C:** Secretory cells are characterized by the *presence* of glycoproteins (mucin and glycogen), not their absence. **NEET-PG High-Yield Pearls:** * **Dating the Endometrium:** The "Noyes Criteria" is used for histological dating. * **Day 17:** Subnuclear vacuoles become more uniform and prominent. * **Day 20:** Peak secretory activity occurs. * **Day 21-22:** Endometrial **stromal edema** is at its maximum (ideal for implantation) [1]. * **Day 23-24:** **Spiral arterioles** become prominent and coiled [1]. * **Day 25-26:** Pre-deciduous changes (stromal cell enlargement) begin around the arterioles [1]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1011-1013.

Question 70: Which of the following is NOT true about atrophic testis?

A. Leydig cell hypoplasia (Correct Answer)
B. Lymphocyte infiltration
C. Small size
D. Normal Sertoli cells

Explanation: ### Explanation Testicular atrophy refers to the regression of the testis after puberty due to various causes such as cryptorchidism, vascular ischemia, radiation, or hormonal imbalances [1]. **Why "Leydig cell hypoplasia" is the correct answer (The False Statement):** In an atrophic testis, there is a **relative increase** in the number of Leydig cells, not hypoplasia [1]. As the seminiferous tubules shrink and the germ cell population depletes, the interstitial space appears more prominent. This often results in **Leydig cell hyperplasia** (either absolute or apparent) as a compensatory response to increased LH levels or simply due to the condensation of the stroma [1]. **Analysis of Incorrect Options:** * **Small size:** This is the hallmark gross feature of atrophy [1]. The loss of germ cells and tubular shrinkage leads to a reduction in testicular volume and a firm consistency due to fibrosis [1]. * **Lymphocyte infiltration:** Chronic inflammation is a common histopathological finding in atrophic testes, especially when the cause is autoimmune, post-inflammatory (mumps orchitis), or related to chronic ischemia [2]. * **Normal Sertoli cells:** Sertoli cells are significantly more resistant to injury (ischemia, radiation, toxins) than germ cells [4]. In an atrophic testis, while germ cells disappear (leading to "Sertoli cell-only" tubules), the Sertoli cells themselves often remain morphologically intact, though they may eventually undergo vacuolation [4]. **NEET-PG High-Yield Pearls:** * **Microscopic Hallmark:** Thickening and hyalinization of the basement membrane of seminiferous tubules [1]. * **Germ Cell Loss:** Atrophy follows a specific order; spermatogonia are the most sensitive, while Sertoli and Leydig cells are the most resistant [4]. * **Clinical Correlation:** Bilateral atrophy is often seen in Klinefelter Syndrome (47, XXY), where testes are small, firm, and show extensive hyalinization of tubules [3]. **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. 976-977. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Diseases Of The Urinary And Male Genital Tracts, pp. 509-510. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lower Urinary Tract and Male Genital System, pp. 977-978. [4] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Diseases Of The Urinary And Male Genital Tracts, pp. 508-509.

Practice by Chapter

Diseases of Male Genital Tract

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Testicular Tumors

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Prostate Pathology

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Diseases of Female Genital Tract

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Cervical Pathology and Neoplasia

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Endometrial Pathology

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Ovarian Diseases and Tumors

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Gestational Trophoblastic Disease

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Placental Pathology

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Sexually Transmitted Infections

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