1. What does ventilation of the lungs depend on?
Correct answer: A patent main airway and pulmonary alveoli, a rigid bony skeleton of the thorax, and the integrity of the nerves and muscles that control the movements of the ribs and diaphragm.
13. Which parts of the body are most commonly affected by keratoacanthoma?
Correct answer: Sun-exposed areas such as the face and nose (75%).
12. What is the difference between a verruca and a wart?
Correct answer: Plantar warts are otherwise known as verrucas, these occur on the weight-bearing areas of the foot. Pressure forces the wart into the deeper tissues, producing intense local pain on walking. They may occur in epidemics in schools and…
11. How would you treat verruca vulgaris?
Correct answer: Untreated, warts usually vanish spontaneously within 2 years, hence the apparent efficacy of folklore ‘wart cures’. Often reassurance that these lesions will disappear is all that is required, but if treatment is demanded they can be burnt down…
10. What are the characteristics of verruca vulgaris?
Correct answer: Also known as a wart. This is a well-localized horny projection that is common on the fingers, hands, feet and knees, particularly of children and young adults. Crops of warts may occur on the genitalia and perianal region,…
7. What is an implantation dermoid? What are the clinical features?
Correct answer: This is a painless, subcutaneous, cystic swelling commonly found on the pulps of the fingers, attached neither to skin nor to the deeper structures. It usually follows a puncture injury (e.g. from a rose thorn) with consequent implantation…
6. What are the two types of dermoid cyst?
Correct answer: Implantation dermoids and sequestration dermoids.
5. How would you treat a sebaceous cyst?
Correct answer: The uninfected sebaceous cyst should be removed to prevent possible complications. A small elliptical skin incision is made around the punctum of the cyst under local anaesthetic; the capsule is identified and the cyst removed intact. Failure to…
4. What is a benign calcifying epithelioma?
Correct answer: This is when a sebaceous cyst becomes calcified.
