Since dermatology is a visual science, take a look at pictures at www.dermnet.org.nz/sitemap.html, or www.dermnet.com. See Table 17-1 for commonly used dermatology terms.
TABLE 17-1DERMATOLOGY TERMS ||Download (.pdf) TABLE 17-1 DERMATOLOGY TERMS
Abrasion: Partial-thickness loss of the epidermis
Abscess: Localized collection of purulent exudate
Annular: Grouped in a circular arrangement
Bulla: Fluid-filled cavity greater than 1 cm
Crust: Dried exudate on the skin surface; can be serous (yellow or honey-colored) or hemorrhagic (red-brown); when related to an infection the term impetiginization can be used
Desquamation: Skin cells coming off in scales or flakes
Erythema: A red color change that is blanchable with pressure
Herpetiform: Grouped in a dermatomal distribution
Macule/Patch: Circumscribed area of color-change without elevation or depression; a "macule" is <1 cm in diameter and a "patch" is >1 cm in diameter
Nodule: A solid subcutaneous mass
Nummular: coin-shaped or circular
Papule/Plaque: A palpable, (elevated) skin lesion; a "papule" is <1 cm in diameter and "plaque" is >1 cm in diameter
Purpura: Bleeding into the skin; does not blanch with pressure
Pustule: A papule with purulent exudate
Ulcer: Full-thickness loss of the epidermis
Vesicle: A fluid-filled cavity in the skin less than 1 cm
Wheal: A round or irregular-shaped edematous plaque that tends to be transient (hive)
A 37-year-old white female presents to clinic for her annual well adult physical examination. After a complete skin examination, you find a suspicious lesion on her back (Fig. 17-1). It measures 16 mm × 8 mm. She has approximately 20 nevi that appear normal. The patient reports never performing self-skin examinations and does not know if the lesion in question is new. She denies any symptomatic lesions. Her family history is remarkable for "skin cancer" on her father's side. Many family members have "tons of moles." She frequented a tanning parlor in college (too much free time … probably majored in communications) and occasionally still does so before social events (didn't learn much about skin health in college).
Question 17.1.1 How do you evaluate the lesion?
A) Take a photograph and see her back in 2 months
B) Take a shallow shave biopsy of the lesion
C) Excise the entire lesion with 1- to 2-mm margins
D) Excise the entire lesion with 3-cm margins
E) All of the above are equally valid approaches
Answer 17.1.1 The correct answer is "C." This lesion is worrisome for malignant melanoma because of the different pigmentation colors and irregular ...