Question 1

Impetigo is typically caused by:&#10;A) Herpesvirus&#10;B) Human papillomavirus&#10;C) Streptococci&#10;D) Fungi&#10;E) Scabies

Accepted Answer

Impetigo is most commonly caused by Streptococcus and/or Staphylococcus bacteria. Herpesvirus and human papillomavirus can cause other skin infections but are not typically associated with impetigo. Fungi and scabies can also cause skin infections, but they are not typically associated with impetigo.

Question 2

Which of the following neoplastic lesions originates in the dermis rather than in the epidermis?&#10;A) Basal cell carcinoma&#10;B) Squamous cell carcinoma&#10;C) Actinic keratosis&#10;D) Dermatofibroma&#10;E) Seborrheic keratosis

Accepted Answer

Dermatofibroma is a neoplastic lesion that originates in the dermis, while the other options (basal cell carcinoma, squamous cell carcinoma, actinic keratosis, and seborrheic keratosis) all originate in the epidermis.

Question 3

Which of the following tends to present as an ulcer?&#10;A) Psoriasis&#10;B) Eczema&#10;C) Syphilitic chancre&#10;D) Ichthyosis&#10;E) Albinism

Accepted Answer

A syphilitic chancre is a firm, painless, non-itchy ulcerative lesion that typically appears at the site of infection with Treponema pallidum. The other conditions listed do not typically present as ulcers.

Question 4

Diabetes predisposes the skin to:&#10;A) Tumors&#10;B) Autoimmune diseases&#10;C) Infections&#10;D) Hyperplasia&#10;E) Hyperpigmentation

Accepted Answer

Diabetes mellitus can impair the immune system response and increase the risk of various types of infections. Skin infections like cellulitis, abscesses, and folliculitis are commonly observed in diabetic patients.

Question 5

Measles present with:&#10;A) Maculopapular rash&#10;B) Vesicular eruption&#10;C) Billions eruption&#10;D) Disseminated furunculosis&#10;E) Ulcerations

Accepted Answer

Measles typically presents with a maculopapular rash that begins on the face and spreads to the rest of the body. Vesicular eruptions (B) and ulcerations (E) are not typical of measles. Billions eruption (C) is not a known clinical term. Disseminated furunculosis (D) is a bacterial infection and not related to measles.

Question 6

Preinvasive carcinoma of the sun-exposed skin is called:&#10;A) Seborrheic keratosis&#10;B) Seborrheic dermatitis&#10;C) Actinic keratosis&#10;D) Basal cell carcinoma&#10;E) Mycosis fungoides

Accepted Answer

Preinvasive carcinoma of the sun-exposed skin is called actinic keratosis. Seborrheic keratosis is a benign skin growth, seborrheic dermatitis is a non-cancerous skin condition, basal cell carcinoma is a type of skin cancer that develops in the basal cells of the skin, and mycosis fungoides is a rare type of cancer of the T-cells in the skin.

Question 7

Malignant melanoma may originate from:&#10;A) Seborrheic keratosis&#10;B) Basal cell carcinoma&#10;C) Lentigo&#10;D) Urticaria pigmentosa&#10;E) Mycosis fungoides

Accepted Answer

Lentigo is a type of skin lesion that may progress to become malignant melanoma. Seborrheic keratosis and basal cell carcinoma are types of non-melanoma skin cancer that do not typically progress to become melanoma. Urticaria pigmentosa is a rare skin condition that is unrelated to melanoma. Mycosis fungoides is a type of non-Hodgkin lymphoma that primarily affects the skin.

Question 8

Prolonged suntanning causes:&#10;A) Ulcers&#10;B) Accelerated aging of the skin&#10;C) Furuncles&#10;D) Carbuncles&#10;E) Psoriasis

Accepted Answer

Prolonged exposure to UV radiation from the sun causes damage to the skin's DNA, leading to accelerated aging, such as wrinkles, dark spots, and a loss of elasticity.

Question 9

Which of the following pigmented lesions has the highest propensity to progress to malignant melanoma?&#10;A) Ephelis&#10;B) Lentigo&#10;C) Dermal nevus&#10;D) Blue nevus&#10;E) Dysplastic nevus

Accepted Answer

Dysplastic nevi have the highest propensity to progress to malignant melanoma. Lentigos are also considered precursors to melanoma, but dysplastic nevi have a higher risk of progression. Ephelides (freckles), dermal nevi, and blue nevi are generally benign and do not have a significant risk of developing into melanoma.

Question 10

The most common epithelial malignant tumor of the face is:&#10;A) Fibroma&#10;B) Basal cell carcinoma&#10;C) Squamous cell carcinoma&#10;D) Malignant melanoma&#10;E) Lymphoma

Accepted Answer

Basal cell carcinoma is the most common epithelial malignant tumor of the face, accounting for approximately 80% of all skin cancers. Fibroma is a benign tumor, while squamous cell carcinoma and malignant melanoma are less common than basal cell carcinoma. Lymphoma is a type of cancer that typically originates in the lymph nodes, not in the face.

Question 11

Ringworm lesions are caused by:&#10;A) Worms&#10;B) Parasites&#10;C) Fungi&#10;D) Bacteria&#10;E) Viruses

Accepted Answer

The answer of Ringworm lesions are caused by:&#10;A) Worms&#10;B) Parasites&#10;C)...

Question 12

Bullae may be caused by all the following except:&#10;A) Sunbathing&#10;B) Allergic reaction&#10;C) Poison ivy&#10;D) Porphyria&#10;E) Tumors

Accepted Answer

The answer of Bullae may be caused by all the...

Question 13

Flat,slightly pigmented skin patch measuring 1 cm is best classified as a:&#10;A) Macule&#10;B) Papule&#10;C) Pustule&#10;D) Vesicle&#10;E) Bulla

Accepted Answer

The answer of Flat,slightly pigmented skin patch measuring 1 cm...

Deck 18: The Skin