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  • Title: [Pulmonary sequestration in the adult. Diagnostic contribution of angiography].
    Author: Ettorre GC, Francioso G, Fracella MR, Strada A, Rizzo A.
    Journal: Radiol Med; 2000; 99(1-2):41-5. PubMed ID: 10803185.
    Abstract:
    PURPOSE: The diagnosis of pulmonary sequestration is based on demonstration of mal-developed lung tissue, feeding on abnormal systemic level. We investigate the role of angiography in the diagnosis of pulmonary sequestration in adult patients. MATERIAL AND METHODS: 1987 to 1998 we examined 9 patients with suspected pulmonary sequestration who were subsequently submitted to surgery. The patients were 3 women and men; 6 of them were symptomatic and 3 asymptomatic. Six patients were examined with CT of chest and upper abdomen, thoracoabdominal aortography and selective arteriography of the abnormal vessel; one patient also submitted to left angiopneumography. One patient underwent bronchography and another one MRI. RESULTS: An unquestionable diagnosis was made in 8 cases, namely 6 of intralobar and 2 of extralobar sequestration, and confirmed surgically. The only questionable case was diagnosed at histology as extralobar pulmonary sequestration atypically fed by thin branches from the left diaphragmatic artery. CONCLUSIONS: Angiography demonstrated the abnormal arterial feeding typical of pulmonary sequestration in all cases but one. The evidence of venous drainage was the key sign to diagnose extra-versus intralobar sequestration. Therefore we conclude that angiography remains an essential tool in the diagnosis of pulmonary sequestration, notwithstanding the great potentials of Helical CT of MR angiography.
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