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1.
Rev. venez. cir ; 61(1): 1-5, mar. 2008.
Article in Spanish | LILACS | ID: lil-540030

ABSTRACT

La fluorescencia con ácido 5-aminolevulínico (ALA) ha sido utilizada como un procedimiento novedoso para identificar a las glándulas paratiroides. En este trabajo se aplicó esta técnica para estudiar sus detalles. Se realizó un estudio experimental no aleatorizado, controlado, descriptivo, a tres pacientes con hiperparatiroidismo secundario por insuficiencia renal crónica. Se administró ALA vía oral exponiendo el comportamiento visceral cervical a la luz blanca y azul (380-440 nm); realizándose luego paratiroidectomía total con timectomía subtotal transcervical. Se intervinieron 3 pacientes, edad media 29.6 años (28-32), con hiperparatiroidismo secundario. Tiempo medio de insuficiencia renal 12 años (10-15), tiempo medio en diálisis 5.6 años (4-8). Hubo fluorescencia selectiva de 4 estructuras que correspondieron a las 4 glándulas paratiroides en los casos 1 y 3, representando una identificación del 100 por ciento, y de 3 estructuras en el caso 2 (identificación 75 por ciento). Los pacientes evolucionaron satisfactoriamente. Efectos adversos: emesis y reacción foto-cutánea, todos autolimitados. La detección de glándulas paratiroides con fluorescencia con ALA pareciera ser efectiva. Hacen falta estudios que evalúen la efectividad, costo-beneficio y otros usos del procedimiento.


Subject(s)
Humans , Adult , Female , Goiter/diagnosis , Goiter/pathology , Kidney Failure, Chronic/pathology , Kidney Failure, Chronic/therapy , Fluorescence , Hyperparathyroidism, Secondary/diagnosis , Hyperparathyroidism, Secondary/pathology , Parathyroidectomy/methods , Americas , Renal Dialysis/methods , Parathyroid Glands/physiopathology , Cell Separation/methods
2.
Arq. bras. endocrinol. metab ; 50(5): 963-967, out. 2006. ilus
Article in English, Portuguese | LILACS | ID: lil-439082

ABSTRACT

Brown tumors are relatively uncommon but they are serious complications of renal osteodystrophy. We describe a 31-year-old woman with end-stage renal disease who had undergone hemodialysis for nine years and developed severe secondary hyperparathyroidism and a maxilla brown tumor despite increasing doses of oral calcitriol and calcium carbonate. The fast increase of the right maxillary bone tumor led to indication of parathyroidectomy (PTx). Despite normalization of serum PTH there was a slow regression of the mass and the patient still complained about her appearance after two-years of follow-up. Excision of the maxillary mass followed by recontouring of the maxilla was then performed, with adequate masticator rehabilitation.


Tumores marrons são relativamente incomuns mas constituem sérias complicações da osteodistrofia renal. Descrevemos o caso de uma paciente, 31 anos, com doença renal em estágio terminal, em hemodiálise há nove anos, que desenvolveu severo hiperparatireoidismo secundário com tumor marrom em maxila apesar de doses crescentes de calcitriol oral e carbonato de cálcio. O rápido aumento do tumor marrom em maxila levou à indicação de paratireoidectomia (PTx). Apesar da normalização dos níveis de PTH sérico, a regressão da massa tumoral foi lenta e a paciente questionava sobre sua aparência após dois anos de seguimento. A excisão da massa maxilar foi seguida da reconstrução com adequada função mastigatória.


Subject(s)
Humans , Female , Adult , Granuloma, Giant Cell/surgery , Hyperparathyroidism, Secondary/etiology , Kidney Failure, Chronic/complications , Maxillary Neoplasms/surgery , Granuloma, Giant Cell/pathology , Hyperparathyroidism, Secondary/pathology , Kidney Failure, Chronic/pathology , Maxillary Neoplasms/pathology , Parathyroidectomy , Parathyroid Hormone/analogs & derivatives , Tomography Scanners, X-Ray Computed
3.
Rev. Fac. Cienc. Méd. (Córdoba) ; 61(2): 70-73, 2004. ilus
Article in Spanish | LILACS | ID: lil-443810

ABSTRACT

In general experienced hands, the inferior parathyroid glands, localized in the thymus or low extrathymus are the main cause or surgical therapeutic failure. When they could not be approached through cervicotomy, or when they were diagnosed after surgery the sternotomy or the angiographic ablation were chosen as treatment. The limited number of thoracoscopic approach whit good results published so far, moved us to use this method. MATERIAL AND METHOD: Patient of 49 years with a 7 year secondary hiperprathyroidism due to CRI. After a sub total parathyroidectomy with bilateral thimectomy, the patient did not present clinical or laboratory improvement. Through a thoracic centellogram sixth MIBI, NMR and CAT, a tumor in the middle mediastinum was fond. The mediastinal structures have been easily identified through a left thoracoscopic approach. At the level of the aortopulmonary window, a tumoral mass is located and, with a simple dissection, et is easily extracted in bag. The biopsy through freezing confirms the parathyroid etiology of the gland. RESULT: Clinical and laboratory evolution has been favorable, with hospital discharged at the 3 day, and being asymptomatic after two years. CONCLUSION: The hipersecretant parathyroid glands, located in middle mediastinum, that can not be approach through cervicotomy, can be successfully approach through thoracoscopic technique.


Por lo general en manos experimentadas las paratiroides inferiores. de localización tímica o extratímica baja, son la principal causa de fracaso terapéutico quirúrgico. Cuando no son accesibles por cervicotomía o bien se diagnosticaron posteriormente. la esternotomía o la ablación angiográfica eran considerados como los tratamientos de elección. El haberse publicado limitadas experiencias de abordaje toracoscópico con buenos resultados nos motivo al empleo de esta VÍa. Material y método: paciente de 49 años con hiperparatiroidismo secundario por IRC de 7 años de evolución. Luego de una paratiroidectomía sub-total con timectomía bilateral. no presenta mejoría clínica ni de laboratorio. Al ser estudiada con centellograma sesta-MIBI. RMN y TAC torácica es localiza un tumor en mediastino meido. Abordaje toracoscópico izquierdo. identificándose con facilidad las estructuras mediastinales. A nivel de la ventana aortopulmonar se localiza una masa tumoral que con simples maniobras de disección es fácilmente extraída en bolsa. La biopsia por congelación confirma la etiología paratiroidea de la misma. Resultado: Evolución clínica y de laboratorio favorable con alta de sala al 3- día. encontrándose a los dos años asintomático. Conclusión: vemos con entusiasmo el abordaje toracoscópico de glándulas paratiroideas hipersecretantes ubicadas en medias tino medio que no hayan podido ser extraídas por cervicotomía.


Subject(s)
Female , Humans , Middle Aged , Adenoma/surgery , Parathyroid Glands/surgery , Mediastinal Neoplasms/surgery , Thoracoscopy , Adenoma/etiology , Adenoma/pathology , Kidney Failure, Chronic/complications , Parathyroid Glands/pathology , Hyperparathyroidism, Secondary/complications , Hyperparathyroidism, Secondary/pathology , Hyperparathyroidism, Secondary/surgery , Mediastinal Neoplasms/etiology , Mediastinal Neoplasms/pathology , Parathyroidectomy , Treatment Outcome
4.
Rev. Fac. Cienc. Méd. (Córdoba) ; 61(2): 65-69, 2004. ilus
Article in Spanish | LILACS | ID: lil-443811

ABSTRACT

Brown tumor (BT) is an uncommon condition that represents the terminal stage of the cystic osteitis fibrosa and have been increasingly reported in hyperparathyroidism secondary to renal failure, due to the increase of survival in patient with hemodialysis. The fine needle aspiration diagnosis is of great importance in the recognition of the BT, although it can be difficult to distinguish it of lesions as the aneurysmal bone cyst and giant-cell tumor. We describe the case of 20-year-old female with chronic renal failure undergoing hemodialysis during six years. Both x-rays and computer tomography revealed a tumor in head of right humerus and lytic images in scapula of the same side, clavicles and ribs. The patient was subjected to a fine needle aspiration biopsy of the tumor of humerus head and the sample was processed with the habitual technique of inclusion in paraffin and stained with hematoxilina and eosina. Histological preparations showed several multinucleate giant cells and spindly or fibrillary cells, feature that was pointed out as compatible, in a context of secondary hyperparathyroidism to chronic renal failure, with a BT. We consider that the radiological and tomographyc finds, besides the history of chronic renal failure with a long history of hemodialysis, were enough to link, with great approach, the histopathology with the diagnosis of BT.


El tumor pardo (TP) es una condición infrecuente que representa la fase terminal de la osteítis fibrosa quistica, habiéndose incrementado los reportes de tumores pardos en hiperparatiroidismos secundarios a falla renal. debido al aumento de supervivencia en pacientes dializados. El diagnóstico por aspiración con aguja fina es de gran importancia en el reconocimiento del TP. aunque puede ser dificil distinguirlo de lesiones como el quiste óseo aneurismático y el tumor de células gigantes. Presentamos el caso de una mujer de 20 años con insuficiencia renal crónica dializada durante seis años. que mostraba, con la tomografia computada y radiografia, un tumor en cabeza de húmero derecho e imágenes osteolíticas en homóplato homolateral, clavícula y costillas. Se realizó una biopsia por punción de la tumor ación de cabeza de húmero y la muestra fue procesada con la técnica habitual de inclusión en parafina y tinción con hematoxilina y eosina. Los preparados histológicos mostraron tejido constituido por abundantes células fusiformes y numerosas células gigantes multinucleadas, cuadro histopatológico que se señaló como compatible, en un contexto de hiperparatiroidismo secundario a insuficiencia renal crónica, con un TP.


Subject(s)
Adult , Female , Humans , Kidney Failure, Chronic/pathology , Hyperparathyroidism, Secondary/pathology , Osteitis Fibrosa Cystica/pathology , Biopsy, Fine-Needle , Giant Cells/pathology , Kidney Failure, Chronic/complications , Hyperparathyroidism, Secondary/complications , Osteitis Fibrosa Cystica/etiology , Renal Dialysis , Humerus
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