Reproductive Pathology Practice Questions

Q: Which type of breast cancer is most commonly associated with bilateral breast carcinoma?

Invasive lobular carcinoma. ***Invasive lobular carcinoma*** - **Invasive lobular carcinoma (ILC)** is the type of breast cancer most frequently associated with **bilateral disease**. [1], [2] This is due to its growth pattern, which often involves the widespread infiltration of cells that can occur in both breasts. [2] - ILC cells tend to grow in single-file strands, making them less likely to form a palpable mass or be detected by mammography, leading to a higher chance of multifocal or bilateral involvement. [1] *Ductal carcinoma in situ* - **Ductal carcinoma in situ (DCIS)** is a non-invasive lesion, meaning the cancerous cells are confined to the breast ducts and have not spread into surrounding breast tissue. - While DCIS can be multifocal within the same breast, it is less commonly associated with bilateral synchronous or metachronous disease compared to invasive lobular carcinoma. *Invasive ductal carcinoma* - **Invasive ductal carcinoma (IDC)** is the most common type of invasive breast cancer overall, accounting for 70-80% of all invasive breast cancers. - While IDC can be bilateral, it is less frequently associated with bilateral presentation than invasive lobular carcinoma. Its growth pattern typically forms a distinct mass that is more readily detected. *None of the options* - This option is incorrect because **invasive lobular carcinoma** is indeed a type of breast cancer with a well-established association with bilateral disease. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 454-455. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Breast, pp. 1068-1069.

Q: What is the risk of malignancy associated with duct ectasia?

No risk of malignancy. ***No risk of malignancy*** - **Duct ectasia** is characterized by the dilation of subareolar ducts and is a **benign condition** with no direct association with an increased risk of developing breast cancer [1]. - While it can present with clinical symptoms that *mimic* breast cancer, such as nipple discharge or a palpable mass, it is not considered a **premalignant lesion** [1]. *1.5% risk of malignancy* - This value is not recognized as a typical risk for malignancy associated with duct ectasia; it may be applicable to other benign breast conditions. - Many benign conditions have varying degrees of malignancy risk, but duct ectasia itself is **not one of them** [1]. *7% risk of malignancy* - This percentage is significantly higher than any established risk for malignancy in benign duct ectasia. - This value is not appropriate for a condition that is considered entirely **benign**. *10% risk of malignancy* - A 10% risk would indicate a substantial predisposition to cancer, which is not characteristic of duct ectasia. - This figure might be more relevant to **atypical hyperplasias** or other high-risk breast lesions. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Breast, p. 1052.

Q: Which of the following is included in the Modified Bloom Richardson criteria for Carcinoma Breast?

Mitotic rate. ***Mitotic rate*** - The **Modified Bloom-Richardson (Nottingham) criteria** for breast carcinoma grading includes three components: **tubular/glandular formation**, **nuclear pleomorphism**, and **mitotic rate**. - **Mitotic rate** assesses the frequency of cell division and is scored based on the number of mitoses per 10 high-power fields. - A higher mitotic rate indicates more aggressive tumor growth and contributes to a higher histological grade. *Desmoplasia* - **Desmoplasia** refers to the fibrous stromal reaction surrounding a tumor and is a common feature of invasive carcinomas. - While it is associated with tumor invasion, it is **not one of the three specific criteria** used in the Modified Bloom-Richardson grading system. - The MBR system focuses on cellular morphology and proliferative activity, not stromal response. *Lymphovascular invasion* - **Lymphovascular invasion** (LVI) indicates the presence of tumor cells within lymphatic or blood vessels, signifying higher metastatic potential. - While LVI is an important **prognostic factor** in breast cancer staging and treatment planning, it is **not part of the MBR histological grading criteria**. - The MBR system evaluates only tubular formation, nuclear features, and mitotic activity. *Nuclear pleomorphism* - **Nuclear pleomorphism** (nuclear grade/nuclear atypia) is actually **one of the three components** of the Modified Bloom-Richardson criteria. - It assesses variation in nuclear size, shape, and chromatin pattern within tumor cells. - Both mitotic rate and nuclear pleomorphism are correct components of the MBR system; however, if forced to choose one answer, mitotic rate is more distinctly quantifiable and is often emphasized in teaching contexts.

Q: A 30-year-old woman presents with complaints of dysmenorrhea and dyspareunia, accompanied by chronic pelvic pain. She undergoes a hysterectomy. Based on the cut section of the hysterectomy specimen provided, identify the condition.

Adenomyosis. ***Adenomyosis*** - The image depicts a **thickened uterine wall** with poorly demarcated, **whorled or trabeculated areas** within the myometrium, often containing small blood or fluid-filled cysts, which are characteristic macroscopic findings in adenomyosis. - The clinical presentation of **dysmenorrhea**, **dyspareunia**, and **chronic pelvic pain** is highly consistent with adenomyosis, where endometrial tissue invades the muscular wall of the uterus. - The diffuse involvement of the myometrium without discrete masses is pathognomonic for adenomyosis. *Endometrial hyperplasia* - Endometrial hyperplasia involves **excessive proliferation of endometrial glands** and stroma within the endometrial cavity, not invasion into the myometrium. - It typically presents with **abnormal uterine bleeding** rather than the dysmenorrhea and pelvic pain seen here. - The cut section would show a **thickened endometrium** rather than myometrial involvement. *Uterine leiomyoma* - Uterine leiomyomas (fibroids) are benign smooth muscle tumors that present as **discrete, well-demarcated, firm, rubbery masses** within or protruding from the myometrium. - The macroscopic appearance in the image, characterized by a diffuse, poorly circumscribed involvement of the myometrial wall, is inconsistent with leiomyoma. - Leiomyomas have a **whorled, white-tan cut surface** that is sharply demarcated from surrounding tissue. *Endometriosis* - Endometriosis involves the presence of **endometrial tissue outside the uterus**, such as on the ovaries, peritoneum, or other pelvic organs. - While it can cause similar symptoms (dysmenorrhea, dyspareunia, chronic pelvic pain), the image provided shows the **cut section of a hysterectomy specimen**, indicating a condition *within* the uterine wall, not external implants. - Endometriosis would not show the characteristic myometrial thickening and trabeculation seen in adenomyosis.

Q: Which karyotype is associated with true hermaphroditism?

46 XX/46 XY (Mosaic). ***46 XX/46 XY (Mosaic)*** - **True hermaphroditism** (now often called **ovotesticular disorder of sex development**) is characterized by the presence of both **ovarian and testicular tissue** in the same individual. - A **mosaic karyotype** such as **46 XX/46 XY** allows for the development of both types of gonadal tissue, as different cell lines with different sex chromosomes are present [1]. *45 X0 streaked gonads* - This karyotype is characteristic of **Turner syndrome**, which presents with **gonadal dysgenesis** (streaked gonads) and lacks functional ovarian or testicular tissue [2]. - Individuals with Turner syndrome are typically female in appearance but infertile due to the absence of a second X chromosome [2]. *46 XY (Testicular tissue only)* - While a **46 XY karyotype** typically leads to the development of **testicular tissue**, the presence of testicular tissue *only* does not constitute true hermaphroditism [3]. - This karyotype is associated with male sexual development, though variations can occur in disorders of sex development affecting testosterone synthesis or androgen insensitivity. *46 XX* - A **46 XX karyotype** typically leads to **female development** with the presence of ovarian tissue. - While **46 XX males** can occur due to translocation of the SRY gene, this does not result in true hermaphroditism (presence of both ovarian and testicular tissue). **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Genetic Disorders, pp. 168-169. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Genetic Disorders, pp. 175-177. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Genetic Disorders, pp. 167-168.

Q: Which of the following testicular tumours is NOT a germ cell tumour?

Sertoli cell tumour. ***Sertoli cell tumour*** - This is a **sex-cord stromal tumour**, not a germ cell tumour, hence it does not arise from germ cells. - Sertoli cell tumours typically present with abnormal hormone levels, but not the classic germ cell tumour markers. *Choriocarcinoma* - This is a **germ cell tumour** that is aggressive and associated with high levels of **beta-hCG** [1][2]. - It derives from the placental tissue and is characterized by **trophoblastic differentiation** [2]. *Seminoma* - A well-known type of **germ cell tumour**, often presenting as a **homogeneous testicular mass** [1]. - It usually manifests with elevated **LDH** and is associated with a more favorable prognosis compared to non-seminomatous germ cell tumours [1]. *Teratoma* - Teratomas are also classified as **germ cell tumours**, containing differentiated tissues like hair, muscle, and bone [1][2]. - They can be **mature** (benign) or **immature** (malignant), and are typically found in younger patients [2][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. 979-980. [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. 982-983. [3] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Diseases Of The Urinary And Male Genital Tracts, pp. 512-513.

Q: What is the number of Barr bodies present in Klinefelter's syndrome?

1. ***1*** - **Klinefelter's syndrome** typically has a 47,XXY karyotype, meaning there are two X chromosomes [1]. - The number of Barr bodies is calculated as **N-1**, where N is the total number of X chromosomes. In this case, 2-1 = **1 Barr body** [1]. - This follows the principle that one X chromosome remains active while additional X chromosomes are inactivated [1]. *0* - **No Barr bodies** are found in individuals with a normal male karyotype (46,XY) or in Turner syndrome (45,XO), neither of which describes Klinefelter's syndrome [1]. - The presence of at least one Barr body indicates the presence of at least two X chromosomes. *2* - **Two Barr bodies** would be indicative of a karyotype with three X chromosomes (e.g., 47,XXX syndrome or Triple X syndrome), which is not Klinefelter's syndrome. - This calculation follows the N-1 rule: 3 X chromosomes - 1 = 2 Barr bodies. *3* - **Three Barr bodies** would correspond to a karyotype with four X chromosomes (e.g., 48,XXXX), which is an even rarer sex chromosome aneuploidy not associated with Klinefelter's syndrome. - The N-1 rule applies: 4 X chromosomes - 1 = 3 Barr bodies. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Genetic Disorders, pp. 173-174.

Q: Which viral proteins are known to act as carcinogens in causing carcinoma cervix?

E - gene. ***E - gene*** - The **E - gene** in human papillomavirus (HPV) is known to play a crucial role in the **transformation of cervical cells**, leading to cancer development [1]. - Specifically, the **E6 and E7 proteins** encoded by this gene interfere with tumor suppressor functions, contributing to cervical carcinoma [1,2]. *L - gene* - The **L - gene** is associated with the virus's structural proteins, primarily aiding in the formation of the viral capsid. - It does not have a direct role in the oncogenic process leading to cervical cancer. *H - gene* - The **H - gene** is not specifically linked to the oncogenic effects of HPV; it is not recognized for contributing to cancer development. - It is often confused in discussions but doesn't directly influence the carcinogenic pathway like the E gene does. *P 24 - gene* - The **P 24 - gene** is not related to HPV; instead, it is associated with **HIV** and its structural components. - This gene does not play any role in the development of cervical carcinoma or transformation of cervical cells. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1006-1007. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Neoplasia, pp. 334-335.

Q: What is the appropriate time for semen examination post-ejaculation?

After 20-30 minutes of liquefaction. ***After 20-30 minutes of liquefaction*** - Semen should be analyzed after **liquefaction**, which typically occurs within 20-30 minutes. This allows for accurate assessment of sperm motility and concentration. - **Liquefaction** is the process where the seminal coagulum (gel-like state) breaks down into a liquid form, enabling sperm to move freely. *Immediately after ejaculation* - Analysis immediately after ejaculation is not appropriate because the semen is still in a **coagulated, gel-like state**, which impedes sperm motility assessment. - In this state, sperm are not freely motile, making it difficult to accurately count them or assess their movement. *Within 1.5 to 2 hours after ejaculation* - While liquefaction should have occurred by this time, waiting this long may lead to a decrease in **sperm motility** due to energy depletion and environmental factors. - Prolonged waiting can also affect the integrity of sperm, potentially leading to inaccurate results for other parameters. *More than 2 hours after ejaculation* - An analysis performed more than 2 hours after ejaculation would likely show significantly **reduced sperm viability and motility**, leading to an underestimation of fertility potential. - Beyond this timeframe, the sample may also be susceptible to **bacterial contamination** and changes in pH, further compromising the accuracy of the results.

Q: Which condition is characterized by androgenesis (purely paternal genetic origin)?

Androgenic complete mole. ***Androgenic complete mole*** - A **complete hydatidiform mole** is characterized by the absence of maternal genetic material and a **purely paternal genetic origin** (androgenesis). - This typically results from the **fertilization of an 'empty' egg** by either two haploid sperm or one diploid sperm. *Turner's syndrome* - This condition is a **chromosomal disorder** in females where one of the two X chromosomes is missing or incomplete (45, X0). - It is not associated with androgenesis but rather with the **absence of a functionally complete X chromosome**. *Polycystic ovary syndrome (PCOS)* - PCOS is an **endocrine disorder** characterized by **hormonal imbalance** (high androgens), ovulatory dysfunction, and polycystic ovaries. - It involves maternal and paternal genetic contributions in a normal diploid set and is not related to androgenesis. *Androgenic partial mole* - A **partial hydatidiform mole** typically involves **triploidy**, where there are two sets of paternal chromosomes and one set of maternal chromosomes (e.g., 69, XXX or 69, XXY). - While it involves extra paternal genetic material, it is not purely paternal in origin, as a **maternal haploid set is also present**.

Question 1

Which type of breast cancer is most commonly associated with bilateral breast carcinoma?

Accepted Answer

Invasive lobular carcinoma

Answer

Ductal carcinoma in situ

Answer

Invasive ductal carcinoma

Answer

None of the options

Question 2

What is the risk of malignancy associated with duct ectasia?

Accepted Answer

No risk of malignancy

Answer

1.5% risk of malignancy

Answer

7% risk of malignancy

Answer

10% risk of malignancy

Question 3

Which of the following is included in the Modified Bloom Richardson criteria for Carcinoma Breast?

Accepted Answer

Mitotic rate

Answer

Desmoplasia

Answer

Lymphovascular invasion

Answer

Nuclear pleomorphism

Question 4

A 30-year-old woman presents with complaints of dysmenorrhea and dyspareunia, accompanied by chronic pelvic pain. She undergoes a hysterectomy. Based on the cut section of the hysterectomy specimen provided, identify the condition.

Accepted Answer

Adenomyosis

Answer

Endometrial hyperplasia

Answer

Uterine leiomyoma

Answer

Endometriosis

Question 5

Which karyotype is associated with true hermaphroditism?

Accepted Answer

46 XX/46 XY (Mosaic)

Answer

45 X0 streaked gonads

Answer

46 XY (Testicular tissue only)

Answer

46 XX

Question 6

Which of the following testicular tumours is NOT a germ cell tumour?

Accepted Answer

Sertoli cell tumour

Answer

Seminoma

Answer

Teratoma

Answer

Choriocarcinoma

Question 7

What is the number of Barr bodies present in Klinefelter's syndrome?

Accepted Answer

1

Answer

0

Answer

2

Answer

3

Question 8

Which viral proteins are known to act as carcinogens in causing carcinoma cervix?

Accepted Answer

E - gene

Answer

P 24 - gene

Answer

L - gene

Answer

H - gene

Question 9

What is the appropriate time for semen examination post-ejaculation?

Accepted Answer

After 20-30 minutes of liquefaction

Answer

More than 2 hours after ejaculation

Answer

Within 1.5 to 2 hours after ejaculation

Answer

Immediately after ejaculation

Question 10

Which condition is characterized by androgenesis (purely paternal genetic origin)?

Accepted Answer

Androgenic complete mole

Answer

Turner's syndrome

Answer

Polycystic ovary syndrome (PCOS)

Answer

Androgenic partial mole

Reproductive Pathology — MCQs

Reproductive Pathology — MCQs

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