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Porphyria cutanea tarda (PCT) is a multifactorial disease; clinical expression depends on both genetic and acquired factors. Few studies have examined the connection between PCT and the regulation of iron metabolism genes other than the HFE gene. We selected five polymorphisms in the CYBRD1, CP, SLC40A1, and HAMP genes to determine whether these polymorphisms can act as genetic modulators in patients with sporadic PCT. None of the 29 patients carried the C282Y mutation. Genomic DNA from 29 PCT patients was isolated. Alleles were discriminated using the ABI StepOnePlus Real-Time PCR System using TaqMan Assays. The results were compared with 107 healthy individuals matched for genetic ancestry, gender, and age. European ancestry was prevalent among PCT patients (68.3%). The frequency of the TT genotype of rs13015236 in the SLC40A1 gene was higher in PCT patients (44.8%) than in controls (20.6%) (P

Porphyria cutanea tarda has a complex etiology with genetic factors not completely elucidated. The miscegenation of the Brazilian population has important implications in the predisposition to diseases. There are no studies concerning the genetic ancestry of patients with porphyria cutanea tarda from a mixed population. Thirty patients living in Rio de Janeiro with sporadic porphyria cutanea tarda were studied for the genetic ancestry through informative markers - INDELS. There was a significant predominance of European ancestry across the sample of patients with porphyria cutanea tarda (70.2%), and a small contribution of African and Amerindian ancestry, 20.1% and 10.9%, respectively.

Description of a case where a female patient who received facial filling with polymethylmethacrylate developed late formation of a nodule and ipsilateral trigeminal neuralgia. The authors question whether there is a possible link between the two morbidities, which could have a common triggering factor or a causal relationship with each other.

Eritromelanose folicular faciei et colli é uma doença rara, de origem desconhecida, caracterizada por hiperpigmentação eritêmato-acastanhada e simétrica nas regiões frontal, temporal e malar, associada com envolvimento do folículo piloso. É comum apresentar ceratose pilar no pescoço e nos ombros. Sua característica clínica primária é composta pela tríade: eritema (com ou sem telangiectasias), pápulas foliculares discretas e hiperpigmentação acastanhada.

Relata-se o caso de um homem de 45 anos com dermatofitose superficial de longa data, tratado, inadvertidamente, com corticoide e antibiótico, com progressão subsequente para a forma profunda, conhecida como granuloma de Majocchi. O tratamento com terbinafina VO foi curativo

Erythromelanosis follicularis faciei et colli is a rare disease of unknown etiology characterized by symmetric erythematous brownish hyperpigmentation on the frontal, malar and temporal areas associated with involvement of the pilary follicle. It is common to present pilar keratosis on the shoulders and neck. The three main clinical characteristics are: erythema (with or without telangiectasias), discrete follicular papules and brownish hyperpigmentation.

Hidradenitis suppurativa is a chronic inflammation of the apocrine glands. It usually starts at or soon after puberty, and women are more often affected than men. The most affected sites are the axillae; however, other regions rich in apocrine glands may also be affected. Involvement restricted to the inframammary fold alone is rare and to the best of our knowledge there have been no reports of any similar cases. The etiology of this condition has yet to be fully clarified.

We report the case of a man of 45 with superficial dermatophytosis longtime inadvertently treated with antibiotics and corticosteroids with subsequent progression to the deep form, known as granuloma Majocchi. Treatment with orally terbinafine was successful.

Vascular leiomyoma are uncommon benign smooth muscle tumors which generally present as a single painful nodule in the lower limbs. We report a case of vascular leiomyoma on the second finger of the left hand, an unusual location for this tumor.

A hidradenite é uma inflamação crônica e supurativa das glândulas apócrinas. Ocorre mais frequentemente, nas mulheres, iniciando durante ou após a puberdade. Os locais mais acometidos são as axilas, porém, outras regiões ricas em glândulas apócrinas, podem ser comprometidas. A localização intermamária, de forma exclusiva, é rara e não encontramos relatos de outros casos semelhantes. Sua etiologia ainda não foi completamente elucidada

Eritromelanose folicular faciei et colli é uma doença rara, de origem desconhecida, caracterizada por hiperpigmentação eritêmato-acastanhada e simétrica nas regiões frontal, temporal e malar, associada com envolvimento do folículo piloso. É comum apresentar ceratose pilar no pescoço e nos ombros. Sua característica clínica primária é composta pela tríade: eritema (com ou sem telangiectasias), pápulas foliculares discretas e hiperpigmentação acastanhada.Erythromelanosis follicularis faciei et colli is a rare disease of unknown etiology characterized by symmetric erythematous brownish hyperpigmentation on the frontal, malar and temporal areas associated with involvement of the pilary follicle. It is common to present pilar keratosis on the shoulders and neck. The three main clinical characteristics are: erythema (with or without telangiectasias), discrete follicular papules and brownish hyperpigmentation.