UPSC-CMS 2022 — Dermatology

Q: Which of the following are true about epidermal cyst? 1. It is lined by stratified squamous epithelium. 2. It is derived from hair follicle. 3. It contains keratin debris. 4. It is not fixed to the skin.

1, 2 and 3. ***1, 2 and 3*** - An **epidermal cyst** is indeed derived from the **infundibulum of a hair follicle**. - It is lined by **stratified squamous epithelium** and contains **keratin debris**, giving it a cheesy consistency. *1, 3 and 4* - While an epidermal cyst is lined by stratified squamous epithelium and contains keratin, it is often **fixed to the skin** due to its attachment to the follicular opening, making statement 4 incorrect. - The cyst's connection to the surface epithelium is a distinguishing feature, preventing it from being freely mobile. *1, 2 and 4* - Although statements 1 and 2 are true, statement 4, claiming it is not fixed to the skin, is generally **incorrect**. - Epidermal cysts typically have a punctum or small opening to the skin surface, indicating its attachment. *2, 3 and 4* - Statements 2 and 3 are correct, but statement 4, suggesting it is not fixed, is **false**. - The presence of a **central punctum**, which is common in epidermal cysts, signifies its epidermal origin and attachment to the skin. [Practice more Dermatology PYQs on OnCourse]

Q: Which of the following is INCORRECT regarding genital warts (condyloma acuminata)? 1. It is usually single. 2. It is related to HPV Types 6 and 11. 3. It can be transmitted sexually. 4. It can involve vagina and anus.

It is usually single.. ***It is usually single.*** - **Genital warts (condyloma acuminata)** caused by Human Papillomavirus (HPV) are typically **multiple lesions**, not single. - They often appear as **clusters** or "cauliflower-like" growths in the anogenital region. *It can involve vagina and anus.* - **Genital warts** can indeed involve the **vagina, anus, vulva, penis, perineum, and cervix**, as these are common areas of HPV infection. - The type of sexual activity influences the location of the lesions. *It is related to HPV Types 6 and 11.* - **HPV types 6 and 11** are indeed the most common causes of **genital warts**, accounting for approximately 90% of cases. - These are considered **low-risk HPV types** because they are rarely associated with cancer. *It can be transmitted sexually.* - **Genital warts** are a classic example of a **sexually transmitted infection (STI)**. - Transmission occurs through **skin-to-skin contact** during sexual activity. [Practice more Dermatology PYQs on OnCourse]

2 Previous Year Questions with Answers & Explanations

Questions

All Subjects Anatomy (2)Biochemistry (3)Community Medicine (27)Dermatology (2)ENT (1)Internal Medicine (21)Obstetrics and Gynecology (32)Pathology (6)Pediatrics (3)Pharmacology (6)Physiology (2)Radiology (1)Surgery (14)

Which of the following are true about epidermal cyst? 1. It is lined by stratified squamous epithelium. 2. It is derived from hair follicle. 3. It contains keratin debris. 4. It is not fixed to the skin.

Which of the following is INCORRECT regarding genital warts (condyloma acuminata)? 1. It is usually single. 2. It is related to HPV Types 6 and 11. 3. It can be transmitted sexually. 4. It can involve vagina and anus.

UPSC-CMS 2022 - Dermatology UPSC-CMS Practice Questions and MCQs

Question 1: Which of the following are true about epidermal cyst? 1. It is lined by stratified squamous epithelium. 2. It is derived from hair follicle. 3. It contains keratin debris. 4. It is not fixed to the skin.

A. 1, 3 and 4
B. 1, 2 and 4
C. 2, 3 and 4
D. 1, 2 and 3 (Correct Answer)

Explanation: ***1, 2 and 3*** - An **epidermal cyst** is indeed derived from the **infundibulum of a hair follicle**. - It is lined by **stratified squamous epithelium** and contains **keratin debris**, giving it a cheesy consistency. *1, 3 and 4* - While an epidermal cyst is lined by stratified squamous epithelium and contains keratin, it is often **fixed to the skin** due to its attachment to the follicular opening, making statement 4 incorrect. - The cyst's connection to the surface epithelium is a distinguishing feature, preventing it from being freely mobile. *1, 2 and 4* - Although statements 1 and 2 are true, statement 4, claiming it is not fixed to the skin, is generally **incorrect**. - Epidermal cysts typically have a punctum or small opening to the skin surface, indicating its attachment. *2, 3 and 4* - Statements 2 and 3 are correct, but statement 4, suggesting it is not fixed, is **false**. - The presence of a **central punctum**, which is common in epidermal cysts, signifies its epidermal origin and attachment to the skin.

Question 2: Which of the following is INCORRECT regarding genital warts (condyloma acuminata)? 1. It is usually single. 2. It is related to HPV Types 6 and 11. 3. It can be transmitted sexually. 4. It can involve vagina and anus.

A. It can involve vagina and anus.
B. It is related to HPV Types 6 and 11.
C. It is usually single. (Correct Answer)
D. It can be transmitted sexually.

Explanation: ***It is usually single.*** - **Genital warts (condyloma acuminata)** caused by Human Papillomavirus (HPV) are typically **multiple lesions**, not single. - They often appear as **clusters** or "cauliflower-like" growths in the anogenital region. *It can involve vagina and anus.* - **Genital warts** can indeed involve the **vagina, anus, vulva, penis, perineum, and cervix**, as these are common areas of HPV infection. - The type of sexual activity influences the location of the lesions. *It is related to HPV Types 6 and 11.* - **HPV types 6 and 11** are indeed the most common causes of **genital warts**, accounting for approximately 90% of cases. - These are considered **low-risk HPV types** because they are rarely associated with cancer. *It can be transmitted sexually.* - **Genital warts** are a classic example of a **sexually transmitted infection (STI)**. - Transmission occurs through **skin-to-skin contact** during sexual activity.