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La aplasia cutis congénita, también conocida como síndrome de Bart, ha sido asociada con todos los subtipos principales de epidermólisis bullosa. Esta enfermedad afecta a 1 por cada 10 000 recién nacidos vivos; solo se han descrito 500 casos en la literatura médica. Se caracteriza por afectar un miembro inferior con patrón en forma de S y presentar lesiones de epidermólisis bullosa en cualquier otra parte del cuerpo. Se presenta el caso de una neonata con las características clínicas mencionadas, hospitalizada en el Servicio de Neonatología del Hospital Pediátrico Universitario «José Luis Miranda». Este diagnóstico es principalmente clínico y se basa en la evidencia de áreas de pérdida cutánea con predominio en miembros inferiores, lesiones ampollares en piel y mucosas, y deformidades ungueales. Su pronóstico puede ser fatal. Este caso reviste gran interés por su baja incidencia; su diagnóstico precoz contribuyó a evitar complicaciones.

Aplasia cutis congenita, also known as Bart's syndrome, has been associated with all the major epidermolysis bullosa subtypes. This disease affects 1 in 10, 000 live births; only 500 cases have been described in medical literature. It is characterized by affecting a lower limb with an S-shaped pattern and presenting epidermolysis bullosa lesions in any other part of the body. We present a female neonate with the aforementioned clinical features, who was hospitalized in the Neonatology service at "José Luis Miranda" Pediatric University Hospital. This diagnosis is mainly clinical and is based on evidence of areas of skin loss predominantly on the lower limbs, bullous lesions on the skin and mucous membranes and nail deformities. Its prognosis can be fatal. This case is of great interest due to its low incidence; its early diagnosis helped to avoid complications.

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Adams-Oliver syndrome (AOS) is diagnosed in presence of aplasia cutis congenita (ACC) of the scalp and terminal transverse limb defects (TTLD). The autosomal recessive (AR) DOCK6-related form of AOS is most often associated with a severe phenotype including also central nervous system and ocular abnormalities. We report a sister and brother with different expression of the phenotype. Both were compound heterozygous pathogenic variants in the DOCK6 gene, including a heterozygous c.5939+2T > C intronic variant that was maternally inherited, and a heterozygous deletion of exons 10 to 21 that was paternally inherited. The sister had microcephaly, periventricular calcifications, minor retinal vasculopathy, and mild impaired neurodevelopment, but only very subtle limb abnormalities and no ACC. Her brother showed a classical DOCK6-related AOS phenotype, including a severe bilateral peripheral ischemic retinopathy. From a review of 22 molecularly confirmed cases with DOCK6-related AOS with ophthalmic examination, we found that 16 of them had retinal vascular pathology (72.7%), confirming as the major ocular anomaly. Documented intrafamilial variability in our family and the evidence revised from previous reports, confirm that AR DOCK6-related AOS expressivity can produce a "milder" phenotype without ACC or TTLD, which could be underdiagnosed in simplex cases because it is difficult to recognize out of a familial context. Therefore, in order to know its real magnitude is required the future inclusion of DOCK6 gene in NGS panels directed to the study of simplex cases of patients with microcephaly, periventricular calcifications, retinal vasculopathy, and/or cardiovascular defects.

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BACKGROUND: Aplasia cutis congenita (ACC) is a rare congenital condition characterized by the absence of skin layers and sometimes other underlying structures, in a localized or widespread area. The exact etiopathogenesis is not yet completely understood. Membranous ACC (MACC) also described as bullous or cystic ACC is a clinical subtype of ACC, covered with a membranous or glistening surface, and appears as a flat scar. There are less than 20 cases reported in the literature. It has been proposed an abortive form of a defective closure of the neural tube. On the other hand, the trisomy 18 is a chromosomal abnormality characterized by a broad clinical spectrum and the presence of defective closure of the neural tube. CASE PRESENTATION: We report on an 18-months-old Venezuelan boy, who presented on the parietal scalp a distinctive localized MACC appearing as an oval lesion covered with a membranous surface, characterized by the absence of hairs and the presence of a sharp hair collar. The karyotype in peripheral blood was 47,XY,+ 18. CONCLUSIONS: This is the second case report of ACC in trisomy 18 and reinforces the interpretation of a non-fortuitous association as well as of a defective closure of the neural tube as pathogenetic mechanism. The case highlights the importance of examining for dermatological alterations such as ACC in cases of chromosomopathy.

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Introducción: El síndrome de Adams-Oliver es una enfermedad heterogénea, caracterizada por aplasia cutis congénita y defecto transverso terminal de extremidades, con un amplio espectro fenotípico de malformaciones asociadas. Se han descrito diferentes modos de herencia en esta enfermedad. En el contexto cubano no se ha presentado ni publicado hasta el momento, casos de pacientes afectados por este síndrome Objetivo: Aportar evidencia que demuestra la presentación de casos con síndrome de Adams-Oliver. Presentación de casos: Se exponen dos casos de pacientes neonatales con síndrome de Adams-Oliver desde el punto de vista clínico, ambos de presentación esporádica. Además de la aplasia cutis congénita y el defecto transverso terminal de extremidades, uno de los pacientes exhibía cutis marmorata telangiectásica congénita y una anomalía de Ebstein. Conclusiones: Se exponen dos neonatos con síndrome de Adams-Oliver, ambos de presentación esporádica y uno de estos con una cardiopatía congénita (anomalía de Ebstein) no informada hasta ahora en la literatura(AU)

Introduction: The Adams-Oliver syndrome is a heterogenic disease characterized by aplasia cutis congenita and terminal transverse limb defects, with a wide phenotypic spectrum of associated malformations. Different kinds of inheritance of this disease have been described. In Cuba, any cases of patients suffering this syndrome have not been presented or published so far. Objective: To provide evidence demonstrating the presentation of cases with Adams-Oliver syndrome. Cases report: Two cases of neonatal patients with Adams-Oliver syndrome are presented from the clinical point of view, both of which are sporadic. In addition to the aplasia cutis congenita and the terminal transverse defect of the limbs, one of the patients presented congenital cutis marmorata telangiectatic and Ebstein anomaly. Conclusions: Two newborns cases with Adams-Oliver syndrome, both of sporadic presentation and one of these with a congenital heart disease (Ebstein anomaly) not previously reported in the literature are presented(AU)

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Aplasia cútis congênita (ACC) é uma doença rara, caracterizada pela ausência de formação completa da pele. Geralmente ocorre no couro cabeludo, na linha mediana, e se apresenta ao nascimento como uma ferida que pode atingir diferentes profundidades e envolver o periósteo, crânio e dura-máter. Apresentamos dois casos de recém-nascidos com aplasia cútis congênita no couro cabeludo que foram tratados no Centro de Atendimento Integral ao Fissurado Lábio Palatal de Curitiba- Paraná. Devido à raridade da ACC e ao pequeno número de pacientes nas séries publicadas na literatura, a padronização do tratamento ainda é incipiente. O propósito do presente trabalho é realizar uma revisão da literatura sobre os aspectos epidemiológicos, diagnóstico e formas de tratamento da ACC de couro cabeludo.

Aplasia cutis congenital (ACC) is a rare disease characterized by the absence of skin formation. Usually occurs on the scalp, in the midline, and presents at birth as a wound that can reach different depths and can involve the periosteum, skull and dura. We present two cases of newborns with congenital cutis aplasia on the scalp that were treated at the Center for Integral Assistance of Cleft Lip and Palate Curitiba-Paraná. Due to the rarity of ACC and the small number of patients in published series in the literature, standardization of treatment is still a challenge. The purpose of this paper is to review the literature on the epidemiology, diagnosis and treatment modalities of ACC of the scalp.

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INTRODUCTION: Aplasia cutis congenita (ACC) is a skin condition of rare presentation, this disease is characterized by absence of skin at birth and associated with facial, skin and bone skull deformities. The diagnosis is mainly clinical. CASE REPORT: Male 5 days after birth, unique product of primigravida mother and no family history of relevance. Physical examination revealed bilateral and symmetrical skin defects of both lower extremities, the disease is characterized by skin fragility, scabs, and coated pseudomembrane ulcers, decreased interdigital space between toes of the left foot, retraction of the foot and genu varum. It was handled with allograft of epidermis cultured in vitro, general wound care and clinical follow-up. DISCUSSION: ACC associated with epidermolysis bullosa is one of the rarer forms of presentation. It is necessary to rule out other skin diseases. Clinical management is recommended with biological or synthetic skin cover, infection prevention, early treatment of complications and clinical follow.

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Aplasia cutis congenita of scalp (ACCS) is a rare developmental anomaly. It has presented in children who have many concomitant anomalies. Large, deep defects can complicate by repeat local and systemic sepsis and life-threatening hemorrhage. In this paper, we describe, to the best of our knowledge, the first case of a newborn boy with ACCS and myelomeningocele whose evolution with hydrocephalus has brought us a serious paradigm of using a shunt in the presence of tissue expanders. The treatment of hydrocephalus with third ventriculostomy associated with good aesthetic final result show an alternative to the use of shunt in this scenario, even in infants of young age. We review here therapeutic strategies and challenges with this disease.

A aplasia cútis congênita do couro cabeludo (ACC) é uma rara anomalia do desenvol- vimento. Tem sido observada em pacientes com outras deformidades associadas. Formas extensas e profundas podem evoluir com septicemia e hemorragia grave. Neste trabalho descrevemos um caso inédito de neonato do sexo masculino com ACC e espinha bífida na qual a evolução com hidrocefalia nos trouxe um dilema em usar shunt na presença de expansores teciduais. O tratamento com terceiroventriculostomia endoscópica associado a um bom resultado estético revela uma alternativa ao uso de derivações neste cenário, mesmo em lactentes. Revisamos aqui as opções terapêuticas e desafios encontrados nesta patologia.

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Aplasia cutis congenita (ACC) is a rare disorder characterized by localized absence of skin that most commonly affects the scalp. We present a case of ACC in a 45-day-old girl and the dermoscopic findings. Dermoscopy has shown to be an easy, fast and useful method for the diagnosis of this condition.

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La aplasia cutis congénita (ACC) es un trastorno poco frecuente del desarrollo cutáneo, presentándose la mayoría como defectos aislados, pero pueden asociarse a otras malformaciones y síndromes genéticos. En relación a un caso de ACC extensa asociada a Síndrome de Adams-Oliver (SAO) se analizaron 10 casos de ACC con ubicación especial o asociadas a otras malformaciones diagnosticadas en forma clínica o por ecografía. Se confeccionó una tabla clasificando cada caso según Frieden, describiendo la ubicación de la aplasia y las asociaciones encontradas.

Aplasia cutis congenita (ACC) is a rare disorder of skin development, appearing mostly as isolated defects, but may be associated with other malformations and genetic syndromes. In relation to a case of extensive associated ACC Adams-Oliver Syndrome (AOS) were analyzed 10 cases of ACC with special location or associated with other malformations diagnosed clinically or by ultrasound. We made a table classifying each case as Frieden`s classification, describing the location of the aplasia and the associations found.

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La Aplasia Cutis Congénita, es un grupo heterogéneo de alteraciones que consisten en la falta congénita localizada o extensa, de piel, que puede acompañarse de ausencia de estructuras subyacentes. Su apariencia clínica es variable y su origen es multifactorial. Presentamos el caso de un recién nacido con Aplasia Cutis Congénita, sin antecedentes familiares de esta enfermedad ni historia de uso materno de drogas, en quien no se constataron hallazgos extracutáneos.

Congenital aplasia cutis, is a heterogeneous group of disorders that involve the congenital absence, localized or extensive, of the skin, which may be accompanied by the absence of underlying structures. Its clinical appareance is variable with a multifactorial origin. We report the case of a newborn with Congenital Aplasia Cutis with no family history of the disease or history of maternal drug abuse, in whom extracutaneous findings were not found.

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