RESUMO
Many unusual and uncommon abnormal gas collections within the abdomen may be encountered. This paper reviews the reported causes for unusual gas collections in the abdomen and describes several new causes of abnormal bowel gas collections.
Assuntos
Doenças do Sistema Digestório/diagnóstico por imagem , Gases , Radiografia Abdominal , Diagnóstico Diferencial , Doenças do Sistema Digestório/diagnóstico , Doenças do Sistema Digestório/fisiopatologia , Humanos , LactenteRESUMO
Residual or recurrent stones in the common bile duct can pose a difficult diagnostic problem in the symptomatic postcholecystectomy patient. Although incrustation of unabsorbed suture material is the most important cause of stone recurrence in the common bile duct after surgery, hemostatic clips may also (though rarely) provide a nucleus for stone formation. We present two cases in which this occurred. Careful attention to the position and orientation of surgical clips on serial postoperative film studies can be most helpful in diagnosing this rare condition.
Assuntos
Colecistectomia/efeitos adversos , Migração de Corpo Estranho/complicações , Cálculos Biliares/etiologia , Hemostasia Cirúrgica/instrumentação , Grampeamento Cirúrgico/efeitos adversos , Idoso , Colangiopancreatografia Retrógrada Endoscópica , Feminino , Cálculos Biliares/diagnóstico por imagem , Cálculos Biliares/cirurgia , Humanos , Recidiva , Esfinterotomia EndoscópicaRESUMO
Sediments of the Eckfeld maar (Eifel, Germany) bear a well-preserved Eocene fauna and flora. Biostratigraphically, Eckfeld corresponds to the Middle Eocene mammal reference level MP (Mammals Paleogene) 13 of the ELMA (European Land Mammal Age) Geiseltalian. In the maar crater, basalt fragments were drilled, representing explosion crater eruption products. By 40Ar/39Ar dating of the basalt, for the first time a direct numerical calibration mark for an Eocene European mammal locality has been established. The Eckfeld basalt inverse isochron date of 44.3 +/- 0.4 Ma suggests an age for the Geiseltalian/Robiacian boundary at 44 Ma and, together with the 1995 time scale of Berggren et al., a time span ranging from 49 to 44 Ma for the Geiseltalian and from 44 to 37 Ma for the Robiacian, respectively. Additional 40Ar/39Ar dating on a genetically related basalt occurrence close to the maar confirms a period of volcanism of ca. 0.6 m.y. in the Eckfeld area, matching the oldest Eocene volcanic activity of the Hocheifel volcanic field.