Introduction: Epidermal nevi are hamartomas of the epidermis and papillary dermis that are usually present during the first years of life. Rarely, malignant transformations develop in association with epidermal nevi. Few cases have been reported worldwide, however the lifetime risk and incidence are unknown. Case Report: This is a case series about basal cell carcinoma arising on epidermal nevus. The first patient is a 42-year-old Filipino female, who presented with a verrucous plaque at birth on the left temple which then developed multiple, discrete to confluent, grayish, papules and nodules on the surface. Histological examination revealed nevus sebaceus and basal cell carcinoma, pigmented type. The second patient is a 53-year-old Filipino male, who presented with a papillomatous plaque on the left temple since the first year of life which then increased in size along with the presence of a solitary bluish-black macule noted by dermoscopic examination. Histologic examination showed verrucous epidermal nevus and basal cell carcinoma, pigmented type. Conclusion Two rare cases of basal cell carcinoma arising on epidermal nevus are reported. Despite the rarity of malignant transformation on epidermal nevus, any suspicious growth warrants a biopsy. Knowledge of these cases is important for probing suspicious growth over an epidermal nevus that would prompt early treatment before these lesions progress in size making it harder to manage.
epidermal nevus ; nevus sebaceus ; verrucous epidermal nevus ; basal cell carcinoma

Introduction: Ageing is a progressive degenerative process that leads to decline in the physiological function and reserve capacity of the whole body system, including the skin. As the Filipino geriatric population escalates, the incidence of skin diseases becomes more widely acknowledged. Presently, there are only a few studies that have been reported locally describing the nature of geriatric dermatoses. Objectives: To describe the epidemiology of dermatologic conditions among Filipino elderly patients that prompted a consult at the ambulatory care service of a tertiary hospital between the years 2014 and 2018. Methodology: All Filipino elderly patients with dermatological conditions seen at the dermatology ambulatory care service from 2014 to 2018 was studied through a single-center, retrospective, descriptive study. Results: Elderly patients comprised 16.76% of the total patients who sought dermatological consultation at the ambulatory care service of the hospital. Majority of the patients were females. Xerosis/xerotic eczema (10.02%) was the most frequently encountered skin disease. The top 10 diseases were irritant contact dermatitis (7.00%), lichen simplex chronicus (6.67%), psoriasis (5.56%), seborrheic dermatitis (5.24%), allergic contact dermatitis (4.37%), tinea pedis (3.51%), herpes zoster (3.49%), seborrheic keratosis (3.23%), and milia (2.54%). Based on the nature of disease, inflammatory condition was the most commonly seen. Conclusion Dermatological disorders are ubiquitous in older people with a significant impact on the quality of life. Inflammatory dermatoses comprise a wide array of skin diseases as evidenced in this study, which account for most of the cutaneous problems in the elderly. Similar to other epidemiological studies, xerosis/xerotic eczema still comprises majority of the cases prompting elderly patients to seek a dermatological consultation.
Aged ; Epidemiology