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1.
Rev. méd. Chile ; 135(10): 1318-1322, oct. 2007. ilus
Article in Spanish | LILACS | ID: lil-470712

ABSTRACT

Pancreatic choristoma is the ocurrence of normal pancreatic tissue in an abnormal location without any anatomic continuity with the main body of the gland. Although heterotopia is uncommon in the gallbladder and biliary tract, anecdotic cases of gastric mucosa, liver, adrenal gland and pancreas among other tissues have been described. We report an eight year-old male and a 22 year-old female, electively operated for symptomatic cholelithiasis. On pathology, a nodule identified as a pancreatic endocrine and exocrine choristoma, was found in the gallbladder wall of both patients. We employed immunohistochemistry to characterize this choristoma. Tubular and epithelial structures were immunoreactive to cytokeratins 7, 8, 18, 19 and 20 and to CA19-9. Exocrine activity was documented by immunoreactivity to al-antitrypsin and al-chemotrypsin. Other immunohistochemical markers such as insulin and somatostatin were positive identifying endocrine activity.


Subject(s)
Adult , Child , Female , Humans , Male , Choristoma/pathology , Gallbladder Diseases/pathology , Pancreas , Biomarkers/metabolism , Choristoma/surgery , Gallbladder Diseases/surgery , Immunohistochemistry
2.
Rev. chil. cir ; 59(3): 229-232, jun. 2007. ilus
Article in Spanish | LILACS | ID: lil-465002

ABSTRACT

El tejido hepático heterotópico es una condición poco común que se identifica con mayor frecuencia durante la exploración quirúrgica del abdomen por otras indicaciones. Describimos un caso de tejido hepático heterotópico localizado en la pared externa de la vesícula biliar de un paciente masculino de 47 años de edad, en el cual se realizó una colecistectomía laparoscópica porcolelitiasis sintomática. El reporte histopatológico informa de cambios crónicos en la pared vesicular y leve infiltrado linfocitario difuso en el corion de la mucosa y muscularis mucosae sin compromiso inflamatorio o infiltración por otros tejidos. El nodulo hepático compromete solo la serosa y mide 12x8x6 mm, la arquitectura es típica del parénquima hepático con su arquitectura lobulillar conservada y leve hiperemia centrolobulillar difusa. Aún cuando el coristoma hepático de nuestro paciente constituye un hallazgo inesperado, es importante destacar las implicaciones patológicas de este tejido y el potencial de malignidad asociado al mismo.


Subject(s)
Male , Middle Aged , Humans , Choristoma/surgery , Choristoma/pathology , Gallbladder Diseases/surgery , Gallbladder Diseases/pathology , Liver , Cholecystectomy, Laparoscopic , Treatment Outcome
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