+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Lesion
|
An area of pathologically altered tissue; the two types are primary and secondary
|
|
Primary lesions
|
Lesions arising from previously normal skin
|
|
Macule or macula (primary)
|
A flat, discolored spot on the skin up to 1 cm across (e.g., a freckle)
|
|
Patch (primary)
|
A flat, discolored area on the skin larger than 1 cm (e.g., vitiligo)
|
|
Papule (primary)
|
A solid mass on the skin up to 0.5 cm in diameter (e.g., a nevus [mole])
|
|
Plaque (primary)
|
A solid mass greater than 1 cm in diameter and limited to the surface of the skin
|
|
Nodule (primary)
|
A solid mass greater than 1 cm that extends deeper into the epidermis
|
|
Tumor (primary)
|
A solid mass larger than 1-2 cm
|
|
Wheal (primary)
|
An area of localized skin edema
|
|
Vesicle (primary)
|
Little bladder; an elevated, fluid-filled sac (blister) within or under the epidermis up to 0.5 cm in diameter (e.g., a fever blister)
|
|
Bulla (primary)
|
A blister larger than 0.5 cm (e.g., a second-degree burn) (meaning = bubble)
|
|
Pustule (primary)
|
A pus-filled sac (e.g., a pimple)
|
|
Secondary lesions
|
Lesions that result in changes in primary lesions
|
|
Erosion (secondary)
|
Gnawed away; loss of superficial epidermis, leaving an area of moisture but no bleeding (e.g., area of moisture after rupture of a vesicle)
|
|
Ulcer (secondary)
|
An open sore on the skin or mucous membrane that can bleed and scar; sometimes accompanied by infection
|
