[Giant gastric and duodenal trichobezoar. Presentation of a case and review of the literature]. / Tricobezoar gigante gástrico y duodenal. Presentación de un caso y revisión de la literatura.

The case of a giant trichobezoar of 2.500 g in weight observed in a 26-year old woman with paranoid disorder which led her to trichophagia is presented. A review of the literature was carried out with the different etiopathogenic theories and proposed treatments being discussed.

[The brown bowel syndrome. A case report]. / Síndrome de intestino marrón. Descripción de un caso.

We present a patient with celiac sprue in whom intestinal lymphoma was suspected. At laparotomy, a brown discolouration of small bowel loops was observed, and a transmural biopsy confirmed a brown bowel syndrome, an entity that is found in long-standing malabsorption conditions. We believe that the intestinal disorder caused by deposition of lipofuscin in the bowel non-striated muscle may cause radiologic changes similar to those seen in intestinal lymphoma.

[Cytomorphologic characteristics of esophageal carcinosarcoma (pseudosarcoma)]. / Aspectos citomorfológicos del carcinosarcoma (seudosarcoma) esofágico.

We report a case of carcinosarcoma or pseudosarcoma of the esophagus, diagnosed through biopsy and endoscopic brush. We also describe several histogenetics hypothesis about this infrequent neoplasm and the difficulty of its diagnosis by means of endoscopy. We emphasize the endoscopic brush positivity and the description of its cytologic characteristics.