概述
Basal cell carcinoma is the most common type of skin cancer, originating in the basal cells located in the bottom layer of the epidermis. It is generally slow-growing and rarely metastasizes, but it can cause local tissue destruction if untreated.
症状
- Pearly or waxy bump on the skin
- Flat, flesh-colored or brown scar-like lesion
- Bleeding or scabbing sore that heals and returns
- Lesions often occur on sun-exposed areas (face, ears, neck)
病因与风险因素
- Chronic sun exposure or UV radiation (e.g., tanning beds)
- Fair skin, light eyes, and hair
- Older age
- History of frequent sunburns
- Immunosuppression
- Personal or family history of skin cancer
诊断方法
- Clinical examination and dermoscopy
- Skin biopsy to confirm histological type
- Rarely, imaging is used if deep invasion is suspected
治疗方案
- Surgical excision (standard treatment)
- Mohs micrographic surgery (for high-risk or facial lesions)
- Topical therapies (imiquimod, 5-FU for superficial BCC)
- Cryotherapy (for small lesions)
- Radiation therapy (for inoperable cases)
- Hedgehog pathway inhibitors (for advanced or metastatic cases)
预后情况
- Excellent with early detection and treatment
- Recurrence possible, especially in high-risk areas
- Metastasis is extremely rare
与此类癌症共处
- Cosmetic management of scars
- Regular skin checks for recurrence or new lesions
- Sun protection and skin surveillance
- Education about warning signs
预防与筛查
- Daily use of sunscreen (SPF 30 or higher)
- Avoid peak UV exposure and tanning beds
- Regular dermatological exams for at-risk individuals
- Self-skin checks for new or changing lesions
FAQs
Q: Is BCC dangerous?
A: It rarely spreads but can damage nearby tissue if untreated.
Q: Will I get more if I’ve had one?
A: Yes, past BCC increases risk of developing additional skin cancers.
Q: Can it be prevented?
A: Yes, with proper sun protection and regular skin exams.
相关资源
- Skin Cancer Foundation
- American Academy of Dermatology
- ClinicalTrials.gov
