Dermoscopy of a single plaque on the face: an uncommon presentation of cutaneous sarcoidosis.

Sarcoidosis is a multisystemic granulomatous disease of unknown causes, and cutaneous sarcoidosis (CS) is an early manifestation of the disease. Dermoscopy has gained increasing interest in the past few years as an aid in the clinical diagnosis of inflammatory and infectious skin manifestations. We present a case report about a single, erythematous, and asymptomatic plaque on the face with unexpected dermoscopy characteristics of CS.

Clinical and dermoscopic features of genital pigmented Bowen disease.

Pigmented Bowen disease (pBD) is an uncommon variant of squamous cell carcinoma in situ. Sometimes it can show clinical and dermoscopic features that are seen in other pigmented lesions of the skin and mucosa, making the diagnosis difficult. We report six cases of pBD occurring on the anogenital area, and discuss the importance of dermoscopy for improving the diagnostic accuracy in pBD.

Raised vulvar lesions: be aware!

Vulvar melanoma is a rare and deadly cancer in women, and the prognosis is often poor. There are limited studies on the dermoscopic features of vulvar melanoma. Described criteria include the presence of blue, gray, or white colors.

Shiitake dermatitis: the first case reported in Brazil.

Shiitake Dermatitis is often presented as papules and erythemato-violaceous linear streaks. It can be associated with bleomycin treatment, dermatomyositis and shiitake mushroom (Lentinus edodes). There is not any previous report concerning this rare etiology in our country.

Pemphigus vegetans induced by use of enalapril.

Pemphigus Vegetans was first described as a variant of Pemphigus Vulgaris in 1876 by Neumann. In 1889, Hallopeau described a patient with pustules and vegetating plaques, suggesting that it would be a variant of Pemphigus Vegetans of Neumann. Both types of Pemphigus Vegetans are characterized by the development of vegetating plaques especially on skin folds (axillae, groin, perianal region).