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Biomedical subjects

A M Duarte

Publications and source records attributed to A M Duarte.

15 recordsLinked to original sources
PubMed2006

Histologically malignant solitary fibrous tumor of the orbit.

An intra-conical histologically malignant solitary fibrous tumor of the orbit presented in a 28 year-old female with intact vision and exophthalmos. Total resection was achieved by means of a frontal craniotomy and orbital roof osteotomy. Evidence of a beneficial role for adjuvant treatments in this particular tumor is controversial and vision impairment is a possible side effect. Therefore they were not employed. The patient is well after two years of follow-up.

Adult↗
PubMed2000

CNS toxicity after topical application of EMLA cream on a toddler with molluscum contagiosum.

EMLA (eutectic mixture of local anesthetics) cream is used topically to provide local anesthesia for a variety of painful superficial procedures. Although the side effects of EMLA are usually mild and transient local skin reactions, potential life threatening complications can be encountered. We report a case of central nervous toxicity after EMLA application for curettage of molluscum contagiosum lesions in a pediatric patient. This complication was the result of a therapeutic misadventure that led to an excessive application of EMLA cream over an extensive area causing an overdose of lidocaine and prilocaine with their subsequent systemic toxicities.

Administration, Topical↗
PubMed1995

Environmental skin injuries in children.

Recently, interest in the potential impact of the environment on our general health has heightened. Particular focus has been directed toward environmental skin injuries because the integument, the only organ of the body that is constantly exposed to the surrounding environment, directly demonstrates the damaging effects of the environment and thereby allows for direct visual recognition by both physicians and laypersons. The characteristic cutaneous features, physiologic responses, therapeutic approaches to promote healing, and preventive measures that may be taken to avoid future environmental injury are discussed. The scope of environmental injuries to the skin is extremely vast; therefore, the focus of this review is limited to cutaneous injuries that may result as a consequence of ultraviolet irradiation, marine life, and electrical forces.

Animals↗
PubMed1994

The effects of self-instruction on preschool children's sorting of generalized in-common tasks.

Three normal preschool children were presented with a sorting task ordinarily insoluble by 4-year-olds, based on the visual discrimination of what features two sample stimuli had in common. Failing to sort correctly according to that criterion, they were then presented with task-analytic conditions in which they learned to name correctly the common features of pairs of such stimuli and to sort correctly according to experimenter-named common attributes. This proved insufficient in producing correct sorting, even when the children were asked to name what the stimuli had in common and did so correctly just before they were asked to sort. The children were then asked to self-instruct: The experimenter said, "So, what are you looking for?" just before the children began to sort in response to the experimenter's presentation of two sample stimuli. This condition typically yielded correct answers to the question and correct sorting, which proved reversible if the experimenter discontinued the question or asked the child to not ask or answer what the two stimuli had in common, just before sorting. The self-instructional effect was found to generalize to new sets of visual stimuli and to a novel experimenter.

Child Development↗
PubMed1993

Eosinophilic pustular folliculitis in infancy and childhood.

We describe nine patients with eosinophilic pustular folliculitis occurring in infancy. All patients had recurrent crops of pruritic papules primarily affecting the scalp and brow region of the face. Biopsy specimens revealed folliculitis with a predominant eosinophilic infiltrate. Bacterial and fungal cultures of pustules were negative. Most patients had leukocytosis and eosinophilia. Clinical response to topical corticosteroid and/or systemic antibiotic therapy was noted. Eosinophilic pustular folliculitis of infancy must be considered in the differential diagnosis of pustular disorders in infancy.

Adrenal Cortex Hormones↗
PubMed1993

Sézary syndrome in an 11-year-old girl.

All forms of cutaneous T-cell lymphoma are rare in children. We describe an 11-year-old girl who had generalized exfoliative erythroderma, intense pruritus, peripheral lymphadenopathy, mycosis cells in the skin and lymph nodes, and Sézary cells in the peripheral blood. Results of a biopsy specimen of involved skin showed changes consistent with mycosis fungoides. A classic case of Sézary syndrome has not previously been reported in childhood or preadolescence.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1992

Scabies. How to find and stop the itch.

Scabies is a pruritic skin infestation caused by the itch mite Sarcoptes scabiei. Physical proximity allows the mite to move from one host to another. The diagnosis is made by identifying the mite or its eggs or excrement microscopically from a sample of skin scrapings. Treatment is achieved with topical application of a scabicide and elimination of the mite from the patient's surroundings.

Diagnosis, Differential↗
PubMed1992

Human papillomavirus type 6 infection involving cutaneous nongenital sites.

Human papillomavirus (HPV) type 6 is classically considered a mucosatropic virus. Interestingly, clinical manifestations of HPV 6 infection that involve nonmucosal or nongenital sites have rarely been described. The reasons for this site specific infectivity of HPV 6 are unknown. We describe a patient who had condylomata acuminata-like lesions that involved cutaneous nongenital sites; HPV 6 DNA was detected in skin biopsy specimens with use of the polymerase chain reaction, followed by hybridization with use of type-specific DNA probes.

Arm↗
PubMed1992

Pool palms.

Explore the source record for details and available documents.

Child, Preschool↗
PubMed1991

Changes in the hemostatic system and compensatory responses during alimentary hyperlipidemia.

Compensatory responses tending to prevent a thrombotic state in rats fed a high lipid diet have been investigated. Platelet membranes from these animals had an increased cholesterol content but the membrane fluidity was found to be within values nearly normal. A decrease in phosphatidylethanolamine was noted. These changes may maintain normal platelet sensitivity to aggregating agents. In fact, platelets from hyperlipidemic rats were hypersensitive to thrombin, but not to adenosine diphosphate. In addition, platelets were apparently able to correct, at least in part, the stated hyperactivity of hyperlipidemic plasma to coagulate, as shown by thrombelastographic tests in both platelet-rich plasma and plasma from hyperlipidemic rats. Finally, thrombelastographic features of whole blood from these animals were found to be normal. This suggests an important role of blood cells in compensating plasma hyperactivity to coagulate during hyperlipidemia.

Adenosine Diphosphate↗
PubMedDate not supplied

Atopic dermatitis symptoms decreased in children following massage therapy.

Young children with atopic dermatitis were treated with standard topical care and massaged by their parents for 20 minutes daily for a 1 month period. A control group received standard topical care only. The children's affect and activity level significantly improved, and their parent's anxiety decreased immediately after the massage therapy sessions. Over the 1 month period, parents of massaged children reported lower anxiety levels in their children, and the children improved significantly on all clinical measures including redness, scaling, lichenification, excoriation, and pruritus. The control group only improved significantly on the scaling measure. These data suggest that massage therapy may be a cost-effective adjunct treatment for atopic dermatitis, since there is a one-time expense of $30 for the child to receive the massage and the parent to learn the technique.

Anxiety↗
PubMedDate not supplied

Antibodies anti bloodstream and circumsporozoite antigens (Plasmodium vivax and Plasmodium malariae/P. brasilianum) in areas of very low malaria endemicity in Brazil.

During 1992-1994, 33 malaria cases were reported in two regions in Brazil where few sporadic atypical cases occur, most of them in home owners, who are weekenders, while home caretakers live there permanently. Indirect Fluorescent Antibody Test (IFAT), with Plasmodium vivax, and Enzime Linked Immunosorbent Assay (ELISA) with repeat peptides of the circumsporozoite (CS) proteins of the 3 known P. vivax variants and P. malarie/P. brasilianum, were performed on 277 sera, obtained within a 5 to 10 km range of malaria cases. Very rarely did any of these donors recall typical malaria episodes. Blood smears of all but 5 were negative. One of the 5 malaria cases included in our serology was of a home owner, I of a permanent resident, 3 from Superintendência de Controle de Endemias employees who went there to capture mosquitoes. In Region 1 the prevalence of IFAT positive sera was 73% and 28% among caretakers, 18% and 9.6% among home owners. In Region 2 (3 localities) no distinction was possible between caretakers and home owners, IFAT positivity being 38%, 28% and 7%. The relative percentage of positive anti-CS repeats ELISA, differed for each of the peptides among localities. Dwellings are in the vicinity of woods, where monkeys are frequently seen. The origin of these malaria cases, geographical differences and high seropositivity is discussed.

Adolescent↗