RESUMO
Platypnea-orthodeoxia syndrome is a rare cause of positional hypoxemia and dyspnea. We present the case of a 54-year-old man with right-to-left shunting through a patent foramen ovale in the setting of metastatic cholangiocarcinoma resulting in platypnea-orthodeoxia syndrome. The shunt was originally not visualized on cardiac magnetic resonance imaging but later detected with transesophageal echocardiography. This case highlights the importance of complimentary multimodality cardiac imaging in the diagnosis of both common and uncommon disorders.
Assuntos
Neoplasias dos Ductos Biliares , Colangiocarcinoma , Forame Oval Patente , Masculino , Humanos , Pessoa de Meia-Idade , Síndrome de Platipneia Ortodeoxia , Postura , Forame Oval Patente/diagnóstico , Forame Oval Patente/diagnóstico por imagem , Ecocardiografia Transesofagiana/efeitos adversos , Dispneia/etiologia , Dispneia/complicações , Hipóxia/diagnóstico , Hipóxia/etiologia , Colangiocarcinoma/complicações , Colangiocarcinoma/diagnóstico , Neoplasias dos Ductos Biliares/complicações , Neoplasias dos Ductos Biliares/diagnóstico , Ductos Biliares Intra-HepáticosRESUMO
Aortic Coarctation (AC) is associated with sudden infantile death. Current pathological diagnosis depends on absolute vessel size which is prone to errors due to different rates of development. This study explores the use of ratios of the external diameter between the aortic isthmus (AI), ascending aorta (AA) and the descending aortas (DA). Our study found that while the vessel diameter increased with gestational age, the ratios remained constant and are therefore preferable than absolute size. This simple and highly reproducible method will allow more cases of AC that may be misdiagnosed to get a proper pathological diagnosis.