Basal cell, squamous cell and melanoma compared

A clinician may discuss them together because all can occur on skin and may need surgery. They should not be grouped into one diagnosis. Microscopic examination identifies which cells are involved and provides features needed for an individual care plan.

Basal cell carcinoma and squamous cell carcinoma arise from keratinocyte-related cells in the epidermis. Basal cell carcinoma often behaves mainly as a locally destructive tumour. Squamous cell carcinoma is assessed for features that may increase concern about spread. Melanoma begins in melanocytes and follows a separate staging system.

Visual clues overlap. A skin cancer may be pink, brown, black, scaly, shiny, ulcerated or relatively subtle. A biopsy is therefore more dependable than assigning a type from colour or body location.

Start with the pathology name rather than a general label such as “skin cancer.” Ask whether the sample removed the whole lesion or only part of it and which report findings affect the next step. Surgical excision may be suitable for any of the three, but the margin and staging approach are diagnosis-specific.

Keep follow-up appointments and learn how to examine hard-to-see areas with a mirror or help from another person. Sun protection reduces further ultraviolet exposure. It cannot determine whether an existing lesion is harmless, so suspicious changes still need assessment.

Arrange an examination for a lesion that grows, changes colour or shape, repeatedly crusts or bleeds, remains sore, or fails to heal. Melanoma may present with change in a mole or a new pigmented or non-pigmented lesion. Basal cell and squamous cell carcinomas may present with persistent sores, bumps or scaly plaques.

Request prompt review for rapid enlargement, uncontrolled bleeding, increasing pain, numbness, weakness or a new nearby lump. These signs do not name the cancer type; they indicate that delay could complicate assessment or treatment.

Ask what diagnosis the biopsy confirms, which pathology features matter, and whether treatment is intended for local removal or also requires staging. If additional surgery is proposed, clarify the margin goal, repair options, recovery limits and how surveillance will be organised.