[Action of monochromatic light on blood constants].
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Biomedical subjects
Publications and source records attributed to A Alomar.
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Circumscribed calcification in the dermis (calcinosis cutis) has been reported following electroencephalographic and electromyographic studies at sites of electrode placement following application of an electrode paste containing calcium chloride. Prolonged exposure and skin microabrasions seem to increase the risk of this rare complication of electrode placement, which has not been previously reported following auditory brainstem evoked potential recordings. We report the appearance of localized dermal calcifications at the sites of electrode placement (forehead and retroauricular areas) following auditory brainstem evoked potential recordings in two children, aged 3 and 2 years, respectively. In both cases the electrodes were applied after gentle scrubbing with an ethanol-impregnated gauze and interposition of a calcium chloride bentonite magma paste. The recording took about 1 hour. Erythematous macules and plaques ranging from 4 to 12 mm in diameter, studded with small stony excrescences, appeared at the areas of electrode application 1 and 5 days later, respectively. Histopathologic study of 4 mm punch biopsy specimens showed amorphous dermal deposits of calcium salts. There was superficial ulceration and transepidermal elimination of the calcium deposits, as well as a foreign body tissue reaction in the surrounding dermis. In both patients small stony pellets were extruded during the healing process, which took 11 and 9 weeks, respectively, and left no scars.
The association of aplasia cutis congenita of the scalp with distal malformations of the limbs is known as Adams-Oliver syndrome. Other reported associations include palatine or auricular malformations, cardiovascular alterations, and spina bifida. Multiple hereditary patterns have been described for this condition, and sporadic cases have also been reported. We report an infant with Adams-Oliver syndrome associated with intracranial calcifications in whom no evidence of intrauterine infection could be demonstrated.
In a 4-week, double-blind, randomized, parallel study to compare the efficacy of cetirizine and astemizole, 47 patients with chronic idiopathic urticaria were enrolled, with 19 cetirizine- and 17 astemizole-treated patients being taken into account for final analysis. Both treatment groups were comparable at initial visit. Giant weals, weals, erythema and oedema were improved in both treatment groups after treatment for 1-4 weeks. Patients' evaluation using a visual analogue scale and symptom scores assessed on a four-point scale showed that the improvement was significantly better using cetirizine for weals (P = 0.04) and there was a trend (P = 0.09) in favour of cetirizine for the visual analogue scale. The number and severity of side-effects were similar in both treatment groups.
Severe necrotic cutaneous ulcers and kidney involvement secondary to type I cryoglobulinemia can be a therapeutic challenge. Plasmapheresis has been reported useful to treat autoimmune diseases such as thrombotic thrombocytopenic purpura, systemic lupus erythematosus, myasthenia gravis and Goodpasture's syndrome. We report the case of a patient who presented necrotic lesions with kidney involvement due to type I cryoglobulinemia (Ig G kappa) that evolved to a multiple myeloma. Treatment with high doses of corticosteroid plus cyclophosphamide did not control the disorder. Therapy with plasmapheresis produced a marked decrease in cryoglobulin levels and a subsequent relevant clinical improvement of cutaneous lesions and renal function. In cryoglobulinemia, plasmapheresis can be used as effective adjunt therapy to minimize cutaneous, renal and/or neurologic involvement.
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