We report on a systematic record of SO2 flux emissions from individual vents of Etna volcano (Sicily), which we obtained using a permanent UV camera network. Observations were carried out in summer 2014, a period encompassing two eruptive episodes of the New South East Crater (NSEC) and a fissure-fed eruption in the upper Valle del Bove. We demonstrate that our vent-resolved SO2 flux time serie...

Constraining the timescales of pre-eruptive magmatic processes in active volcanic systems is paramount to understand magma chamber dynamics and the triggers for volcanic eruptions. Temporal information of magmatic processes is locked within the chemical zoning profiles of crystals but can be accessed by means of elemental diffusion chronometry. Mineral compositional zoning testifies to the occu...

Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volc...

BACKGROUND Eruptive collagenoma is a rare disease. All of the previously reported cases were located on the skin. Here we report such a case occurring in esophagus and intestine. CASE PRESENTATION Our patient is a Chinese woman. Two years ago, hundreds of small nodules were identified in her esophagus and intestine. The lesions were characterized by thickened hyalinized collagen fibers and ha...

Phonolitic eruptions can erupt either effusively or explosively, and in some cases develop highly energetic events such as caldera-forming eruptions. However, the mechanisms that control the eruptive behaviour of such compositions are not well understood. By combining pre-eruptive data of well studied phonolitic eruptions we show that the explosive-effusive style of the phonolitic magma is cont...

BACKGROUND Papular elastorrhexis (PE), eruptive collagenoma (EC), and nevus anelasticus (NA) are described as multiple small papules with decrease, fragmentation, or lack of dermal elastic fibers. These diseases are suggested to be the same entity. The change of collagen fibers in the conditions has not been addressed to date. OBJECTIVE We compared the clinical features of the 3 diseases and ...

Eruptive vellus hair cysts were first reported by Esterly, Fretzin and Pinkus in 1977. They described two children who developed asymptomatic papular eruptions over the chest and mentioned two other cases, also children, who presented after submission of the original manuscript. Histology revealed a mid-dermal cyst lined by squamous epithelium containing keratinous material and vellus hairs. Le...

Syringoma is a benign, eccrine sweat gland tumor. The typical clinical appearance of syringoma is firm, skincolored to brown papules on the lower eye lids of middle aged women. Familial syringoma is rare, but possibly is underestimated in prevalence. Eruptive syringoma, a separate entity, presents mostly in adolescents as clusters of numerous papules on the upper half of the body. Familial erup...

Eruptive vellus hair cysts are asymptomatic, flesh-colored-to-bluish, 1-to-4 mm-sized papules that are usually located on the chest and extremities of children and young adults. Histologically, small cysts are observed in the mid-dermis and these cysts contain multiple hair shafts and keratinous materials. We report here on a case of eruptive vellus hair cysts that developed on a rare site, the...

Acute pancreatitis and eruptive xanthomas are the only recognised direct complications of severe hypertriglyceridaemia. We present the case of a 33-years old male patient in whom the onset of a type 2 diabetes, added to an unknown familial hyperlipidemia, precipitated a dramatic raise of serum triglyceride levels, that cause in turn an acute pancreatitis and the appearance of dermic eruptive xa...