NIC Esthetician Written ExamScientific ConceptsEasy
A client is concerned about recent changes in a mole on their back. They describe it as having an irregular border, varying shades of brown and black, and a diameter larger than a pencil eraser. Which of the following skin cancers is most indicated by these characteristics?
- ASquamous Cell Carcinoma
- BBasal Cell Carcinoma
- CMelanoma
- DActinic Keratosis
Show answer & explanationAnswer & explanation
Correct answer: C. Melanoma
The ABCDEs of melanoma (Asymmetry, Border irregularity, Color variation, Diameter >6mm, Evolving) are classic indicators. The described mole perfectly matches the criteria for melanoma.
Why the other options are wrong
- A. Squamous Cell Carcinoma presents as a red, scaly patch or open sore, usually not an irregular, pigmented mole.
- B. Basal Cell Carcinoma often appears as a pearly nodule or sore that doesn't heal, not typically an irregular, multicolored mole.
- D. Actinic Keratosis is a precancerous lesion, often a rough, scaly patch, not a mole with irregular borders and color.
Melanoma
The most serious type of skin cancer, developing in melanocytes, identifiable by the ABCDEs of melanoma.
- Highly metastatic if not caught early.
- Often arises from existing moles or appears as a new dark spot.
- Prompt detection is crucial for successful treatment.
Memory trick: ABCDEs are your sun safety guide.