We found no significant difference in diagnostic quality of pulmonary CT angiography using MDCT between the study and control groups. The use of MDCT acquisition, faster injection rates, higher contrast medium concentration, and higher trigger levels may decrease the number of nondiagnostic studies in this population. MDCT may be a worthwhile investigation in the majority of pregnant patients with suspected pulmonary embolism.

Sestamibi scintigraphy was more likely to be positive in younger patients without nodular thyroid disease who have larger parathyroid adenomas with more severe hyperparathyroidism.

These cases of fibrosing bronchiolitis represent an uncommon pattern of acute bronchiolitis that is reversible if detected at an early stage. Early recognition and treatment may prevent development of permanent bronchiolar fibrosis.

672 VATS lobectomies were performed for the primary treatment of clinical stage I and II NSCLC, 43 patients with ground glass opacity or complex cases were excluded. Patients were analyzed according to ports used (one or multiple), R status, lobe-specific lymphadenectomy, subcarinal lymphadenectomy, length of hospital stay and length of thoracic drainage. A propensity-matched analysis was planned however, all variables were evenly distributed in both groups. Result: Of 629 VATS lobectomies, 234 (37%) were performed with U-VATS and 395 (63%) with M-VATS. Most resections were classified as R(un) (84%); 2% were incomplete. When compared with M-VATS, U-VATS was associated with superior completeness of resection (p¼0.0159), superior lobe-specific lymphadenectomy (p¼0.0004), and superior subcarinal lymphadenectomy (p¼0.0064). The highest mediastinal lymph node station dissected was not different between the approaches. The patients who underwent U-VATS had shorter hospital stays (mean: 4.4 days vs 6.2 days, p¼0.0001) and less thoracic drainage (mean: 4.7 days vs 5.8 days, p¼0.0004). There was no difference in operative mortality (p¼0.3024) ( Table 1). Conclusion: In our institution, most VATS lobectomies were uncertain resections due to the lymph node evaluation by IASLC definition. Using U-VATS is not inferior to M-VATS in accomplishing a complete oncologic resection thoracoscopically. Keywords: non small cell lung cancer, early stage lung cancer, complete resection

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