Arteritis de Takayasu y formación inusual de aneurisma gigante de arteria pulmonar, reporte de un caso / Takayasu arteritis and giant aneurysm of pulmonary artery, Case report

RESUMEN La arteritis de Takayasu es una de las vasculitis de grandes vasos que afecta a la aorta y a sus ramas principales, llevando a estenosis arterial y, en ocasiones, a trombosis. También se observa la formación de aneurismas en la circulación general. No tiene un tratamiento específico. La terapia de elección son los corticoides, seguidos de otros inmunosupresores en casos de no lograrse un control adecuado del proceso inflamatorio. Se reporta el caso de un paciente con arteritis de Takayasu, con formación inusual de aneurisma gigante de la arteria pulmonar.

ABSTRACT Takayasu arteritis is a large vessel vasculitis that affects the aorta and its main branches, leadingto arterial stenosis, and occasionally, thrombosis. There is also aneurysm formation in the general circulation. There is no specific treatment. The therapy of choice is corti-costeroids, followed by other immunosuppressants in cases where adequate control of the inflammatory process is not achieved. A case is presented of a patient with Takayasu arteritis and the unusual presence of giant aneurysm of pulmonary artery.

Comparison of Contrast-enhanced Spiral CT Scan and Pulmonary Angiogra p hy in Diagnosing Pulmonary Embolism: An Experimental Study in Pig Models

PURPOSE: The purpose of our study was to compare the diagnostic value of contrast-enhanced spiral CT scanning and pulmonary angiography in detecting central and peripheral pulmonary embolism (PE) in pigs. MATERIALS AND METHODS: Experiments were performed in a porcine model of acute pulmonary embolism. Five pigs underwent contrast-enhanced spiral CT and pulmonary angiography after central venous administration of embolic material (Konyak). Three thoracic radiologists read the films and the results were compared with the findings of pathologic specimens. RESULTS: Of 85 cases of PE detected pathologically, 78 (91.8 %) were visible with spiral CT and 65 (76.5 %) with pulmonary angiography. Sensitivity and specificity for the detection of central emboli were 95 % and 100 %, respectively, with spiral CT, and 89 % and 100 %, respectively, with pulmonary angiography. Sensitivity and specificity for the detection of peripheral emboli were 88 % and 99 %, respectively, with spiral CT, and 64% and 100 %, respectively, with pulmonary angiography. CONCLUSION: Contrast-enhanced spiral CT is a very useful method for the diagnosis of both peripheral and central pulmonary embolism. Compared to pulmonary angiography its sensitivity and specificity are high.

Comparison of Contrast-enhanced Spiral CT Scan and Pulmonary Angiogra p hy in Diagnosing Pulmonary Embolism: An Experimental Study in Pig Models

PURPOSE: The purpose of our study was to compare the diagnostic value of contrast-enhanced spiral CT scanning and pulmonary angiography in detecting central and peripheral pulmonary embolism (PE) in pigs. MATERIALS AND METHODS: Experiments were performed in a porcine model of acute pulmonary embolism. Five pigs underwent contrast-enhanced spiral CT and pulmonary angiography after central venous administration of embolic material (Konyak). Three thoracic radiologists read the films and the results were compared with the findings of pathologic specimens. RESULTS: Of 85 cases of PE detected pathologically, 78 (91.8 %) were visible with spiral CT and 65 (76.5 %) with pulmonary angiography. Sensitivity and specificity for the detection of central emboli were 95 % and 100 %, respectively, with spiral CT, and 89 % and 100 %, respectively, with pulmonary angiography. Sensitivity and specificity for the detection of peripheral emboli were 88 % and 99 %, respectively, with spiral CT, and 64% and 100 %, respectively, with pulmonary angiography. CONCLUSION: Contrast-enhanced spiral CT is a very useful method for the diagnosis of both peripheral and central pulmonary embolism. Compared to pulmonary angiography its sensitivity and specificity are high.