Indeterminate cell histiocytosis is a very rare proliferative disorderof histiocytes which displays both langerhans cell histiocytosisand non langerhans cell histiocytosis immunophenotypic features.The majority of the patients develop multiple lesions which areclinically indistinguishable from generalized eruptive histiocytosis.We report a 14-year-old girl with multiple papules on the face,scal...

Lichen Planus (LP) is a chronic mucocutaneous disease with several variants defined by the configuration of lesions, the morphological appearance, and the site of involvement. Although exact cause of LP is not known, it is thought that it is most likely an immunologically mediated reaction especially a cell-mediated immune response of unknown origin. Typical lesion is seen as a pruritic, papula...

Dental fluorosis has recently been diagnosed in wild marsupials inhabiting a high-fluoride area in Victoria, Australia. Information on the histopathology of fluorotic marsupial enamel has thus far not been available. This study analyzed the developmental and post-eruptive defects in fluorotic molar enamel of eastern grey kangaroos (Macropus giganteus) from the same high-fluoride area using ligh...

A tephrostratigraphy of the active Antarctic volcano, Mt. Erebus, was determined from englacial tephra on the ice-covered flanks of Erebus and an adjacent volcano. The tephra are, used to reconstruct the eruptive history and magmatic evolution of Erebus. Scanning electron microscope images and Image Particle Analysis suggest the tephra formed in phreatomagmatic and magmatic eruptions and in som...

efficacy. These lesions are rarely selflimiting, and recurrences are common. We describe a 25-year-old woman with no relevant history who consulted for asymptomatic, flesh-colored papules of 1-2 mm, distributed on the anterior area of the neck and neckline (Figure 1). The symptoms started 10 years earlier on the lower eyelids, gradually spreading to the abdomen, neck, and neckline, with outbrea...

Many calderas show remarkable unrest, which often does not culminate in eruptions (non-eruptive unrest). In this context the interpretation of the geophysical data collected by the monitoring networks is difficult. When the unrest is eruptive, a vent opening process occurs, which leads to an eruption. In calderas, vent locations typically are scattered over a large area and monogenic cones form...

On Mt. Etna (Italy), an enhanced Normalized Difference in Vegetation Index (NDVI) signature was detected in the summers of 2001 and 2002 along a distinct line where, in November 2002, a flank eruption subsequently occurred. These observations suggest that pre-eruptive volcanic activity may have enhanced photosynthesis along the future eruptive fissure. If a direct relation between NDVI and futu...