[Primary XXXX : clinical analysis of 7 cases and review of the literature].

@entity1 @entity662 @entity825 @entity1143 @entity1353 @entity5 @entity358
OBJECTIVE: To analyze the clinical and radiological manifestations of primary @entity358 in order to improve the diagnosis of this rare disease. METHODS: Seven cases of primary @entity358 which was confirmed by pathology of surgical specimens were retrospectively analyzed. RESULTS: Three cases were benign (1 of pulmonary parenchymal origin and 2 of bronchial origin) and 4 were malignant (3 of pulmonary parenchymal origin and 1 of bronchial origin). There were four male and three female @entity1 , age ranging from 31 to 74 years. All the 7 cases had chest X-ray films and 6 cases had chest CT examinations. The major complains included slight hemoptysis, cough, fever, @entity662 and @entity1353 . Bronchoscopy showed @entity5 in 3 cases and partial stenosis of bronchus in 2 cases. Radiology showed nodules in the left main bronchus in 2 cases. Solitary mass was found in 4 cases and multiple masses (2 lesions) were found in one @entity1 . The margin of the lesions was smooth in 3 cases (one malignant and two benign) and irregular in another three cases (all malignant). Chest CT showed reticular enhancement in one case (benign), heterogeneous enhancement in 4 cases (3 malignant and 1 benign), and peripheral enhancement with a large central hypodense area in one case (malignant). Compression of the @entity825 and ribs was prominent in 2 @entity1 . @entity1143 and blood vessel infiltration were evident in 3 @entity1 with @entity5 . CONCLUSION: Primary @entity358 is rare. The symptoms and CT manifestations are nonspecific. The size and the density of the @entity5 are not helpful in differentiating @entity5 from the benign one. Marginal irregularity and invasion of adjacent structures are suggestive of @entity5 .
