RESUMO
Heteropropic ossification was initially described by Riedel in 1883. This is a rare disease but well documented in gastrointestinal tract. Several mechanisms have been proposed to determine the etiology of this metaplasia. We present a 59 year old male that was treated in the National Institute of Medicine Sciences and Nutrition Salvador Zubirán in whom after various abdominal surgical procedures the presence of bowel osseous metaplasia was documented.
Assuntos
Ileostomia , Intestino Delgado/patologia , Ossificação Heterotópica/patologia , Complicações Pós-Operatórias/patologia , Abdome/cirurgia , Humanos , Masculino , Mesentério , Metaplasia , Pessoa de Meia-IdadeAssuntos
Melanoma Amelanótico/patologia , Neoplasias Retais/patologia , Colonoscopia , Humanos , Masculino , Melanoma Amelanótico/diagnóstico por imagem , Melanoma Amelanótico/cirurgia , Pessoa de Meia-Idade , Neoplasias Retais/diagnóstico por imagem , Neoplasias Retais/cirurgia , Tomografia Computadorizada por Raios XRESUMO
Hemangiomas are rare vascular tumors. They most commonly appear in the small bowel, as well as the colon and the rectum. Here, we report two cases of male patients who were admitted to our hospital for low rectal painless bleeding, misdiagnosed of hemorrhoid bleeding. Colonoscopy reported vascular tumors in both cases, which we surgically removed.
Assuntos
Neoplasias do Colo/cirurgia , Hemangioma Cavernoso/cirurgia , Laparoscopia , Proctocolectomia Restauradora/métodos , Adulto , Neoplasias do Colo/diagnóstico , Colonoscopia , Hemangioma Cavernoso/diagnóstico , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Primary malignant melanomas of the bile ducts are extremely rare, with only seven cases previously reported in the literature published in English. This report concerns a 67-year-old woman with a primary melanoma at the confluence of the hepatic ducts. She underwent resection and hepaticojejunostomy. Seventeen years later, she remains alive with no evidence of recurrence. A thorough review of the literature was done. Surgical resection can offer hope for long-term survival.
Assuntos
Neoplasias do Ducto Colédoco , Melanoma , Idoso , Neoplasias do Ducto Colédoco/diagnóstico , Neoplasias do Ducto Colédoco/cirurgia , Feminino , Humanos , Melanoma/diagnóstico , Melanoma/cirurgiaRESUMO
A study was carried out to evaluate the effect of heat treatment on the stability of alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TeA) in sunflower flour and the effectiveness of this treatment by a biological assay in rats. The concentrations of AOH and AME remained constant during heating at 100°C for up to 90 minutes while TeA concentration decreased with time to 50% after 90 minutes. The most effective treatment in reducing AOH and AME levels was heating at 121°C for 60 minutes. Histopathological evaluation in the biological assay in rats fed withAlternaria toxins showed marked atrophy and fusion of villi in the intestines and liver cell damage; these lesions were less severe in rats fed heat-treated sunflower flour in line with the reduced toxin content. However, a lower weight gain and a noticeable renal damage in rats were produced when they fed decontaminated flour.