Solar ultraviolet A radiation and nonmelanoma skin cancer in Arica, Chile.

In this work, we present the maximum daily values of solar ultraviolet A radiation (UV-A) as a function of time. The results indicated that such values reached a maximum of 93.9 W/m in 2010 and a minimum of 16.

Practical management of acne for clinicians: An international consensus from the Global Alliance to Improve Outcomes in Acne.

Scientific advances are continually improving the knowledge of acne and contributing to the refinement of treatment options; it is important for clinicians to regularly update their practice patterns to reflect current standards. The Global Alliance to Improve Outcomes in Acne is an international group of dermatologists with an interest in acne research and education that has been meeting regularly since 2001. As a group, we have continuously evaluated the literature on acne.

Psychoneuroimmunology and the Skin.

The nervous, immune, endocrine and integumentary systems are closely related and interact in a number of normal and pathological conditions. Nervous system mediators may bring about direct changes to the skin or may induce the release of immunological or hormonal mediators that cause pathological changes to the skin. This article reviews the psychological mechanisms involved in the development of skin diseases.

The role of ultrasound in rheumatic skin and nail lesions: a multi-specialist approach.

The skin and nails are commonly involved in rheumatic conditions, both by the primary disease and/or long-term immunosuppressive treatments. These superficial affections may also imply a worsening of the quality of life in patients and cosmetic sequels. The latest advances in ultrasound technology show that skin and nail abnormalities are now recognizable and therefore susceptible to follow-up non-invasively.

Benign tumors and pseudotumors of the nail: a novel application of sonography.

Objective: The purpose of this study was to determine the scope of high-resolution sonography in the detection of benign tumors and pseudotumors of the nail unit.

Methods: We performed a retrospective study of the sonographic findings in 103 consecutive patients with benign tumors and pseudotumors of the nail that were medically derived and confirmed histologically. Statistical analysis (Student t test) was performed comparing clinical and sonographic diagnoses.

[Assessment of clinical diagnostic accuracy for skin cancer].

Background: There is an increase in the incidence rates of skin cancer in Chile.

Aim: To study the clinical diagnostic accuracy (CDA) for skin cancer.

Material And Methods: CDA was defined as the percentage of agreement between clinical and pathological diagnosis.

[Association between sunburn in children and ultraviolet radiation and ozone layer, during six summers (1996-2001) in Santiago, Chile (33,5 degrees S)].

Background: During the recent 10 years the ozone layer has decreased while ultraviolet radiation has increased in Santiago, Chile.

Aim: To determine whether the number of sunburns in children correlate with ultraviolet radiation in Santiago.

Subjects And Methods: During six Austral Summers (1996-2001) children below 15 years old, consulting for sunburn, were evaluated at the "Corporation for the Aid of Burned Children" (COANIQUEM) in Santiago (33.