1.A Case Report: Cavitary Infarction Caused by Pulmonary Tumor Thrombotic Microangiopathy in a Patient with Pancreatic Intraductal Papillary Mucinous Neoplasm.
Kyoungkyg BAE ; Woon Jung KWON ; Seong Hoon CHOI ; Jong Hwa LEE ; Hee Jeong CHA
Korean Journal of Radiology 2015;16(4):936-941
Pulmonary tumor embolism is commonly discovered at autopsy, but is rarely suspected ante-mortem. Microangiopathy is an uncommon and distinct form of simple tumor pulmonary embolism. Here, we present a 52-year-old male with tumor thrombotic microangiopathy and pulmonary infarction, which might have originated from intraductal papillary mucinous tumor of the pancreas. Multiple wedge-shaped consolidations were found initially and aggravated with cavitation. These CT features of pulmonary infarction were pathologically confirmed to result from pulmonary tumor thrombotic microangiopathy.
Adenocarcinoma, Mucinous/pathology/radiography
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Humans
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Lung/pathology/*radiography
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Lung Neoplasms/pathology/radiography
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Male
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Middle Aged
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Pancreas/pathology
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Pancreatic Neoplasms/*complications/pathology
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Papilloma, Intraductal/pathology/radiography
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Pulmonary Embolism/pathology/*radiography
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Pulmonary Infarction/pathology/*radiography
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Thrombotic Microangiopathies/diagnosis/*radiography
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Tomography, X-Ray Computed
2.Lung Infarction due to Pulmonary Vein Stenosis after Ablation Therapy for Atrial Fibrillation Misdiagnosed as Organizing Pneumonia: Sequential Changes on CT in Two Cases.
Mi Ri KWON ; Ho Yun LEE ; Jong Ho CHO ; Sang Won UM
Korean Journal of Radiology 2015;16(4):942-946
Pulmonary vein (PV) stenosis is a complication of ablation therapy for arrhythmias. We report two cases with chronic lung parenchymal abnormalities showing no improvement and waxing and waning features, which were initially diagnosed as nonspecific pneumonias, and finally confirmed as PV stenosis. When a patient presents for nonspecific respiratory symptoms without evidence of infection after ablation therapy and image findings show chronic and repetitive parenchymal abnormalities confined in localized portion, the possibility of PV stenosis should be considered.
Atrial Fibrillation/surgery
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Catheter Ablation/*adverse effects/methods
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Constriction, Pathologic/diagnosis/*radiography
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*Diagnostic Errors
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Female
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Humans
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Lung/surgery
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Male
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Middle Aged
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Pneumonia/diagnosis
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Pulmonary Infarction/pathology/*radiography
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Pulmonary Veins/physiopathology/radiography
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Tomography, X-Ray Computed/adverse effects
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Vascular Diseases/physiopathology