Four Cases of Non Pigmented Basal Cell Carcinoma

Abstract

　　Basal cell carcinoma（BCC）develops most commonly on the face. Although non-pigmented BCC is rare among Japanese, it is relatively common among Caucasians. Non-pigmented BCC is difficult to diagnose based solely on clinical findings. Dermatoscopy is a non-invasive and helpful diagnostic tool for pigmented lesions, including BCC. The dermatoscopic features of such lesions, especially the presence of arborizing vessels, are useful for the diagnosis of not only pigmented BCC but also non-pigmented BCC. We herein report four cases of non- or hypo-pigmented BCC. Case 1 was an 82-year-old Japanese woman with a hypo-pigmented nodule on the upper lip, case 2 was a 31-year-old Caucasian man with an ulcer on the upper lip, case 3 was a 40-year-old Japanese man with a non-pigmented nodule on the external nose, and case 4 was a 55-year-old Japanese woman with a non-pigmented nodule on the external nose. Resection was performed for all four cases, and they were histopathologically diagnosed as BCC. All four cases were confirmed to be non-pigmented BCC based on the clinical and histopathological findings.