RESUMEN
This research underlines the need to improve water management policies for areas linked to confined karstic aquifers subjected to intensive exploitation, and to develop additional efforts towards monitoring their subsidence evolution. We analyze subsidence related to intensive use of groundwater in a confined karstic aquifer, through the use of the InSAR technique, by the southern coast of Spain (Costa del Sol). Carbonates are overlain by an unconfined detritic aquifer with interlayered high transmissivity rocks, in connection with the Mediterranean Sea, where the water level is rather stable. Despite this, an accumulated deformation in the line-of-sight (LOS) direction greater than -100â¯mm was observed by means of the ERS-1/2 (1992-2000) and Envisat (2003-2009) satellite SAR sensors. During this period, the Costa del Sol experienced a major population increase due to the expansion of the tourism industry, with the consequent increase in groundwater exploitation. The maximum LOS displacement rates recorded during both time spans are respectively -6â¯mm/yr and -11â¯mm/yr, respectively. During the entire period, there was an accumulated descent of the confined water level of 140â¯m, and several fluctuations of more than 80â¯m correlating with the subsidence trend observed for the whole area. Main sedimentary depocenters (up to 800â¯m), revealed by gravity prospecting, partly coincide with areas of subsidence maxima; yet ground deformation is also influenced by other factors, the main ones being the fine-grained facies distribution and rapid urbanization due to high touristic pressure.
RESUMEN
We report the occurrence of idiopathic eruptive macular pigmentation in four children and one adolescent. This condition appears to be a distinct clinicopathologic and histologic entity. It is characterized by asymptomatic, pigmented macules involving the neck, trunk, and proximal limbs. All patients or their families denied the patients' having taken any drug before the eruption. In all of the patients the first sign was a pigmented spot without preceding erythematous, papular, or hypopigmented lesions. Histologic study showed enhanced epidermal basal layer pigmentation with pigmentary incontinence, a mild perivascular lymphohistiocytic infiltrate, and many melanophages in the papillary dermis. Electron microscopy showed an increased number of melanosomes in basal and suprabasal keratinocytes as well as clustered melanosomes in dermal melanophages. Treatment of this asymptomatic condition is unnecessary because spontaneous resolution of the lesions is to be expected within several months to a few years.
Asunto(s)
Trastornos de la Pigmentación/patología , Adolescente , Brazo , Niño , Preescolar , Epidermis/patología , Femenino , Histiocitos/patología , Humanos , Hiperpigmentación/patología , Queratinocitos/patología , Dermatosis de la Pierna/patología , Linfocitos/patología , Masculino , Melanocitos/patología , Melanocitos/ultraestructura , Microscopía Electrónica , Cuello , Remisión Espontánea , Piel/patología , TóraxRESUMEN
We describe a case of congestive heart failure caused by a Salmonella virchow sepsis. Concurrent with this there were considerable skin lesions. The diagnosis was made as result of stool and skin biopsy culture. There was a good response to treatment.