Squamous-cell skin cancer is one of the main types of skin cancer along with basal cell cancer, and melanoma. It usually presents as a hard lump with a scaly top but can also form an ulcer. Onset is often over months. Squamous-cell skin cancer is more likely to spread to distant areas than basal cell cancer. When confined to the outermost layer of the skin, a precancerous or in situ form of cSCC is known as Bowen's disease.
Bowen's disease (BD) 是一種起始於皮膚表皮的皮膚癌。它在白種人中較常見,通常出現在受陽光照射的部位,也可能發生於其他部位。BD 多呈單一病變,常被視為更嚴重皮膚癌的前兆。診斷時,醫師通常會在顯微鏡下檢查組織樣本(活檢)。 Bowen's disease (BD) is an in-situ squamous cell carcinoma of epidermis. The etiology of BD is multifactorial with high incidence among Caucasians. BD is common in photo-exposed areas of skin, but other sites can also be involved. Lesions are usually solitary. The morphology of BD differs based on age of the lesion, site of origin, and the degree of keratinization. BD is considered as the lull before the storm, which precedes an overt squamous cell carcinoma. Histopathology is the gold standard diagnostic modality to confirm the diagnosis.
Bowen's disease 主要影響 60 歲以上的白人。HPV 16、18、34 和 48 株與生殖器部位的鮑文氏症有關。HPV 在非生殖器病例中的參與尚不清楚。 Bowen disease is most commonly found in white patients over 60 years old. Other risk factors include chronic sun exposure, immunosuppression, arsenic exposure and cutaneous human papillomavirus (HPV) infection. HPV types 16, 18, 34 and 48 cause Bowen disease at genital sites; the role of HPV in nongenital cases of Bowen disease is less well defined. HPV types 2, 16, 34 and 35 have been rarely identified within nongenital lesions.
它通常表現為身體任何部位的紅斑、鱗狀或硬皮區域,最常見於小腿。
可透過多種治療方案根治,包括冷凍療法、刮除術、燒灼術、光動力療法或病灶切除術。
○ 診斷與治療
#Dermoscopy
#Skin biopsy
#Mohs surgery
#Photodynamic therapy