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10 Important and Common Solitary Skin Lesions

Melanoma
Squamous cell carcinoma
Basal cell carcinoma
Actinic keratosis
Seborrheic keratosis
Nevus (mole)
Wart
Dermatofibroma
Epidermoid cyst
Abscess
 
Common Solitary Skin Lesions
A skin lesion that is single, small, and localized is referred to as a solitary skin lesion. Solitary skin lesions range from common benign (harmless) lesions, such as a wart, to serious, life-threatening lesions, such as melanoma – the most dangerous of the skin cancers. Solitary lesions often have distinctive visual features suggesting a precise diagnosis. The seborrheic keratosis often appears to be “stuck on” to the skin’s surface. Sometimes, however, seborrheic keratoses are flat. Warts have a particular and distinct appearance, with many small projections. In the elderly, though, squamous cell carcinoma can look like a wart, so one must be careful when considering a wart-like lesion. Sometimes it is impossible to know the precise diagnosis without a biopsy. When diagnosing a patient who complains of a pigmented lesion and there is a history of change, then it is almost always prudent to biopsy. 
 
Click a topic below for pictures and information. Students should review VisualDx for multiple images and a summary of each disease or condition.
 
 
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Melanoma
Melanoma
Squamous cell carcinoma
Squamous cell carcinoma
Basal cell carcinoma
Basal cell carcinoma
Actinic keratosis
Actinic keratosis
Seborrheic keratosis
Seborrheic keratosis
Nevus (mole) Mole (nevus)
Wart
Wart
Dermatofibroma
Dermatofibroma
Epidermoid cyst
Epidermoid cyst
Abscess
Abscess