What should you know about lentigo maligna melanoma dermoscopy?

A dermatoscope is a handheld device that magnifies and illuminates the skin. It helps a clinician inspect an uneven brown or black patch, especially on sun-exposed facial skin, without surface reflection hiding detail. Lentigo maligna melanoma may show irregular colour, asymmetrical structures, widening pigment around follicles, or a pattern that changes across the patch. These clues raise concern; they do not prove cancer and cannot tell how deeply abnormal cells extend.

The clinician may photograph the area or compare it with earlier images. Dermoscopy is an assessment step, not a substitute for a biopsy. A pathology report is needed when the appearance warrants a definite diagnosis.

Arrange a skin assessment if a flat pigmented patch is enlarging, developing several shades, or becoming more irregular. Bring photographs showing when you first noticed it and mention previous skin cancers, treatments, or heavy sun exposure. The clinician may recommend a biopsy or complete removal so the suspicious area can be examined. Protect the area from further sun while waiting, but do not apply bleaching products or pick at the skin.

Seek prompt dermatology review for a new or changing facial patch, bleeding, crusting, persistent itching, or pigment extending beyond a scar or treated area. Rapid change, an open sore, or a dark patch near the eye deserves timely assessment. Seek urgent medical help for uncontrolled bleeding, spreading redness with fever, or severe pain after a biopsy.

Ask whether the dermoscopy pattern needs biopsy, which biopsy method will sample the whole suspicious area, and when the pathology result should be available. Ask how to monitor nearby skin and whether a baseline photograph would help.