Unraveling habitat-driven shifts in alpha, beta, and gamma diversity of hummingbirds and their floral resource.

Background: Biodiversity, crucial for understanding ecosystems, encompasses species richness, composition, and distribution. Ecological and environmental factors, such as habitat type, resource availability, and climate conditions, play pivotal roles in shaping species diversity within and among communities, categorized into alpha (within habitat), beta (between habitats), and gamma (total regional) diversity. Hummingbird communities are influenced by habitat, elevation, and seasonality, making them an ideal system for studying these diversities, shedding light on mutualistic community dynamics and conservation strategies.

Dermatoses in Latin American Immigrant Children Seen in a Universitary Hospital of Spain.

Over the past 10 years Spain has become an important immigrant receiver country as the proximity with Africa and the cultural facilities with Latino-American countries have made of Spain a very attractive place to settle down for immigrants. From 1st January 2007 to 31st December 2007, all the pediatric patients visits (0-14 years old) seen in the units of the Dermatology Section of the University General Hospital of Alicante (Spain) were prospectively recorded. During the study period 3,108 visits were recorded.

Congenital lower limb enlargement in a newborn.

A full-term newborn presented with swelling of his right leg soon after birth. There was no alteration in Doppler. The grandmother and other relatives were said to have shown a similar history at birth.

Fragrance contact allergy: a 4-year retrospective study.

Background: Fragrance chemicals are the second most frequent cause of contact allergy. The mandatory labelling of 26 fragrance chemicals when present in cosmetics has facilitated management of patients allergic to fragrances.

Objectives: The study was aimed to define the characteristics of the population allergic to perfumes detected in our hospital district, to determine the usefulness of markers of fragrance allergy in the baseline GEIDAC series, and to describe the contribution made by the fragrance series to the data obtained with the baseline series.

Mammary skin tag in a 2-year-old girl: a long-lasting adnexal polyp of neonatal skin?

We describe the case of a 2-year-old girl showing a pedunculated lesion on the areola of the nipple since birth. Clinical and histological features were consistent with an adnexal polyp of neonatal skin observed beyond the neonatal period.

Atypical presentation of an omphalomesenteric duct cyst.

We describe a clinical case of an omphalomesenteric duct (OMD) cyst that presented as an umbilical nodule with a late and atypical clinical presentation. This report illustrates the possibility of OMD cyst resembling a keloid or dermatofibroma.

Bullous congenital ichthyosiform erythroderma: a sporadic case produced by a new KRT10 gene mutation.

Bullous congenital ichthyosiform erythroderma is an unusual type of inherited ichthyosis by mutations in the genes that encode K1 and K10. We report the case of a girl with typical clinical and histopathologic findings of bullous congenital ichthyosiform erythroderma, who was found to have a new mutation in KRT10 gene, Glu445Lys at position 445, affecting the 2B region of the KRT10 protein, the end of the rod domain, where many other keratin mutations associated with hereditary skin disease have been reported. This new mutation contributes to add to the catalog of bullous congenital ichthyosiform erythroderma mutations known.

Extragenital bullous lichen sclerosus atrophicus.

Lichen sclerosus et atrophicus (LSA) is a rare, chronic, mucocutaneous disease of unknown etiology. Onset can occur in subjects of any age, but the condition is more prevalent in adult females around the time of menopause. In both sexes, the most common site of the lesions is the anogenital area.

Dermatoses in Latin American immigrants seen in a tertiary hospital.

Europe, and in particular Spain, has become the destination of a considerable number of immigrants, 50% come from Latin America. The purpose of this study was to describe the cases of dermatoses seen in the immigrant Latin American population and compare them with those found in the control Spanish population. Over a year all the visits of economic immigrants seen in the Dermatology Section of the Hospital General Universitario de Alicante were prospectively recorded.

Nail changes in Langerhans cell histiocytosis: a possible marker of multisystem disease.

We describe a child with a 6-month history of onycholysis, subungual hyperkeratosis, and hemorrhages in most of her fingernails and toenails. Nail involvement preceded the identification of osteolytic lesions at the mastoid on a cranial computed tomography scan, which was performed because of repeated episodes of acute otitis media. Some weeks later, a small number of erythematous papules developed over the trunk and face.

Multiple lentigines arising in resolving psoriatic plaques after treatment with etanercept.

Development of lentigines in zones previously affected by plaques of psoriasis has been described, and its frequency has probably been underestimated. Most cases have been described following the use of phototherapy, although other authors have observed the appearance of lentigines in patients with psoriasis treated only with topical products. It has been suggested that the mechanism involved could be an abnormal reaction to UV light or an unusual form of postinflammatory hyperpigmentation.

Non-melanocytic benign skin tumors in children.

Background: Dermatologists often attend children with benign skin tumors and cysts. The decision to perform dermatologic surgery in children may be difficult to make, especially in cases of benign tumors.

Objective: The objective of this study was to determine the nature of non-melanocytic benign skin tumors amenable to dermatologic surgery in children.