Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 8 de 8
Filter
Add more filters










Publication year range
3.
J Eur Acad Dermatol Venereol ; 19(2): 208-11, 2005 Mar.
Article in English | MEDLINE | ID: mdl-15752293

ABSTRACT

Multinucleate cell angiohistiocytoma (MCAH) was first described by Smith and Wilson-Jones in 1985. It is an uncommon entity but probably underdiagnosed because of lack of recognition by clinicians and pathologists. We report a 47-year-old man with asymptomatic grouped violaceous papules on the dorsum of the hands for 3 years. The histopathological and immunopathological features of our case revealed characteristics of MCAH similar to the initial description of Smith and Wilson-Jones and other reports.


Subject(s)
Hand , Histiocytoma, Benign Fibrous/pathology , Skin Neoplasms/pathology , Cell Nucleus/pathology , Giant Cells/pathology , Humans , Immunohistochemistry , Male , Middle Aged , Skin/blood supply , Skin/pathology
4.
Actas dermo-sifiliogr. (Ed. impr.) ; 93(2): 128-130, feb. 2002. ilus
Article in Es | IBECS | ID: ibc-6681

ABSTRACT

Los nervios epidérmicos verrugosos son lesiones hamartomatosas que se diferencian esencialmente hacia queratinocitos epidérmicos. Ciertas características clínicas e histopatológicas han permitido la individualización del llamado nevo epidérmico verrugoso inflamatorio lineal (NEVIL). Un varón de 42 años presentaba en la extremidad inferior derecha una dermatosis eritematosa y queratósica que se extendía longitudinalmente siguiendo el trayecto de las líneas de Blaschko. En el seno de la previa dermatosis desarrolló en los últimos años varias lesiones tumorales exofíticas cuyo estudio histológico reveló únicamente una intensa papilomatosis de naturaleza benigna. Describimos el ejemplo de un nevo epidérmico verrugoso inflamatorio lineal que en la edad adulta desarrolló múltiples proliferaciones vegetantes de carácter puramente hiperplásico (AU)


Subject(s)
Adult , Male , Humans , Hyperplasia/diagnosis , Nevus/diagnosis , Skin Neoplasms/diagnosis , Clinical Evolution , Foot Dermatoses/diagnosis , Foot Dermatoses/complications , Papilloma/diagnosis
5.
Cir. Esp. (Ed. impr.) ; 68(5): 471-485, nov. 2000. tab, ilus
Article in Es | IBECS | ID: ibc-5641

ABSTRACT

Las enzimas proteolíticas han adquirido recientemente un gran interés en fisiopatología tumoral debido a su papel potencial en la degradación de los componentes principales de la matriz extracelular y membrana basal facilitando, de esa forma, la invasión tumoral y las metástasis. Las enzimas proteolíticas que son expresadas por los carcinomas humanos se agrupan en cuatro grandes familias: metaloproteinasas, aspartil-proteinasas, cisteín-proteinasas y serín-proteinasas. La expresión tumoral de la mayoría de estas enzimas ha sido asociada con un comportamiento más agresivo de los carcinomas humanos y un pronóstico desfavorable de los pacientes. Sin embargo, su expresión tumoral no siempre implica un pronóstico adverso, ya que enzimas como el activador tisular del plasminógeno, el antígeno prostático específico y el pepsinógeno C han sido asociadas con un pronóstico favorable en pacientes con cáncer de mama. Además, existen datos que sugieren que estas expresiones tumorales pueden estar rela cionadas con una vía específica de respuesta hormonal, lo que resulta demostrativo del complejo papel que pueden desempeñar las enzimas proteolíticas en la fisiopatología tumoral. Por otra parte, el resultado final de la acción de las enzimas pro teolíticas dependerá en gran medida del balance con sus inhibidores naturales, producidos por las propias células tumorales para coordinar su acción invasiva, o bien por las células estromales como mecanismo de defensa ante la progresión tumoral. Finalmente, existen datos recientes que indican que la utilización de inhibidores sintéticos de las enzimas proteolíticas puede representar una nueva y prometedora alternativa terapéutica para los carcinomas humanos (AU)


Subject(s)
Female , Male , Humans , Peptide Hydrolases/analysis , Peptide Hydrolases/pharmacokinetics , Peptide Hydrolases/metabolism , Extracellular Matrix/enzymology , Extracellular Matrix/pathology , Carcinoma/enzymology , Carcinoma/pathology , Carcinoma/diagnosis , Plasminogen Activators/analysis , Plasminogen Activators/antagonists & inhibitors , Plasminogen Activators/metabolism , Metalloproteases/analysis , Metalloproteases/metabolism , Aspartic Acid Endopeptidases/analysis , Cysteine Endopeptidases/analysis , Endopeptidases/analysis , Neoplasms/pathology , Neoplasms/enzymology , Pepsinogen A/analysis , Pepsinogen A/biosynthesis , Pepsinogen A/metabolism , Biomarkers, Tumor/analysis , Biomarkers, Tumor/metabolism , Biomarkers, Tumor/blood
6.
Rev Esp Anestesiol Reanim ; 46(6): 241-6, 1999.
Article in Spanish | MEDLINE | ID: mdl-10439643

ABSTRACT

OBJECTIVES: To assess renal safety of sevoflurane administered to Wistar rats at clinical concentrations during prolonged periods of inhalation. MATERIAL AND METHODS: The experimental animals were assigned to two groups of six rats each. Group I received anesthesia with 1.5% sevoflurane for 6 hours and group II received the same concentration of sevoflurane for 15 hours. The anesthesia was inhaled in an open circuit of fresh air at 1 l/min (medicinal air, 22.75% O2). The animals were kept in metabolic cages throughout the nine days the experiment lasted. Weight and urine output were recorded daily and the day before anesthesia was started, inorganic fluoride and blood was analyzed for renal function (urea, sodium, and blood urea nitrogen [BUN]). Between two and three hours after withdrawal of anesthesia, inorganic fluoride was again assessed, and on the last day of the experiment a new blood sample was taken to evaluate renal function. Kidney tissue was then studied. RESULTS: The two groups were similar as to weight, urea, sodium and BUN. Hourly diuresis was significantly greater after anesthesia in group II but not in group I. Inorganic fluoride was significantly higher in both groups, with postanesthetic levels of 22.42 +/- 1.76 microM/l in group I and 35.05 +/- 1.80 microM/l in group II. Renal tissue from both groups appeared normal under an optical microscope. CONCLUSIONS: Sevoflurane at the doses tested increases inorganic fluoride concentrations although for both periods the levels stayed under 50 microM/l, which has been considered the nephrotoxic threshold. No signs of changes in renal function were observed in blood texts or tissue studies.


Subject(s)
Anesthetics, Inhalation/toxicity , Kidney Diseases/chemically induced , Kidney/drug effects , Methyl Ethers/toxicity , Anesthetics, Inhalation/administration & dosage , Anesthetics, Inhalation/pharmacology , Animals , Blood Urea Nitrogen , Diuresis/drug effects , Dose-Response Relationship, Drug , Drug Evaluation, Preclinical , Fluorine/urine , Kidney Function Tests , Kidney Glomerulus/drug effects , Kidney Tubules/drug effects , Male , Methyl Ethers/administration & dosage , Methyl Ethers/pharmacology , Natriuresis/drug effects , Rats , Rats, Wistar , Sevoflurane , Time Factors
8.
Histopathology ; 3(1): 69-77, 1979 Jan.
Article in English | MEDLINE | ID: mdl-428923

ABSTRACT

Infestation with Enterobius (Oxyuris) vermicularis is very common but seldom produces lesions and even more rarely causes granulomas. Two cases of oxyuris granulomas/nodules), one in the serosa of ovaries and left fallopian tube in a female of 32-years and the other in the submucosa of the appendix in a 10-year old girl are identified by the presence of true necrotizing granulomas containing the parasite. The pathogenesis and differential diagnosis of abdominal granulomas is discussed.


Subject(s)
Appendicitis/etiology , Granuloma/etiology , Oxyuriasis/complications , Peritonitis/etiology , Adult , Appendicitis/pathology , Child , Female , Granuloma/pathology , Humans , Oophoritis/etiology , Oophoritis/pathology , Oxyuriasis/pathology , Peritonitis/pathology , Salpingitis/etiology , Salpingitis/pathology
SELECTION OF CITATIONS
SEARCH DETAIL
...