No abstract available.
Pulmonary Atelectasis*

No abstract available.
Pulmonary Atelectasis*

No abstract available.
Pulmonary Atelectasis*

No abstract available.
Pulmonary Atelectasis*

The characteristic radiographic and CT findings of Iobar atelectasis are well known. However, Iobar atelectasis is a dynamic process, and atypical presentations may occur due to a number of different causes. Familiarity with the various typical and atypical radiographic findings of Iobar atelectasis is important for correct diagnosis. The aim of this manuscript is to illustrate the spectrum of radiographic findings of Iobar atelectasis and to correlate the radiographic findings with the CT findings. The review will illustrate examples of typical and atypical Iobar atelectasis, including combined Iobar atelectasis, peripheral Iobar atelectasis, migrating Iobar atelectasis, rounded atelectasis involving the entire lobe and Iobar atelectasis mimicking paravertebral and mediastinal masses.
Diagnosis ; Pulmonary Atelectasis* ; Recognition (Psychology)

The characteristic radiographic and CT findings of Iobar atelectasis are well known. However, Iobar atelectasis is a dynamic process, and atypical presentations may occur due to a number of different causes. Familiarity with the various typical and atypical radiographic findings of Iobar atelectasis is important for correct diagnosis. The aim of this manuscript is to illustrate the spectrum of radiographic findings of Iobar atelectasis and to correlate the radiographic findings with the CT findings. The review will illustrate examples of typical and atypical Iobar atelectasis, including combined Iobar atelectasis, peripheral Iobar atelectasis, migrating Iobar atelectasis, rounded atelectasis involving the entire lobe and Iobar atelectasis mimicking paravertebral and mediastinal masses.
Diagnosis ; Pulmonary Atelectasis* ; Recognition (Psychology)

Accessory fissures serve not only as natural barriers against infection but also help in localizing any focal pulmonary parenchymal diseases and in distinguishing pleural from parenchymal diseases. Knowledge of these fissures might be useful in differentiating unusual forms of atelectasis or consolidation occuring adjacent to the fissure. Left minor fissure (LMF) is a kind of unusual accessory fissures of the left lung, which separates adjacent segments of the upper lobe as clefts of various depths lined by two layers of visceral pleura. In this study, 4 cases of LMFs found in the left upper lobe during a routine dissection of 36 cadavers were observed. Of the 4 cases, 3 cases were true LMFs which located between the anterior segment of the upper lobe and superior segment of lingula, and 1 case was considered as left azygos fissure. Among the true LMFs, 2 LMFs coursed horizontally and 1 LMF coursed upward obliquely along the costal surface. The depth of LMFs was 0.5~1.2 cm and the length was 5~8 cm.
Cadaver ; Lung* ; Pleura ; Pulmonary Atelectasis

The authors have experienced a case of entire lung collapse on the right side which appeared after upper abdominal operation under endotracheal general anesthesia. It has been rarely reported in the literature.
Anesthesia, General ; Lung* ; Pulmonary Atelectasis*

To evaluate late change of irradiated lung, a total of 60 rats was irradiated on right lungfield with a single dose of 2000 rads using Co-0 teletherapy unit. Follow-p roentgenographic and histopathologic study was performed three, six and twelve months after irradiation in each group of 20 rats. The results were as follows: 1.Chest roentgenographic findings in the order of frequency were pneumonic consolidation, atelectasis, and pleural effusion in 3-onth follow-p group; atelectasis, fibrostreaky infiltration, and pneumonic consolidation in 6-onth follow-p; and normal, and normal, and atelectasis in 12-onths follow-p group. 2. Main histopathological findings were alveolar and interstitial exudates, and diffuse infiltration of inflammatory cells in 3-onth follow-p group; thickening of interstitium and vascular wall in 6-onth follow-p group; and interstitial fibrosis in 12-onth follow-p group.
Animals ; Exudates and Transudates ; Fibrosis ; Lung* ; Pleural Effusion ; Pulmonary Atelectasis ; Rats

BACKGROUND: During bilateral transthoracic endoscopic sympathicotomy (TES), we have noticed a tendency for hypoxemia during deflation of the second lung despite adequate reinflation of the first one. This study was designed to compare PaO2 during TES of the first side with that of TES of the second side and to investigate whether PaO2 during the sequential one-lung ventilation (OLV) was correlated with two-lung ventilation (TLV) time after reinflation of the collapsed first lung. METHODS: Forty patients were randomly allocated into two groups. After TES of the first side, OLV of the second side was immediately performed after reinflation of the collapsed first lung (group A), or after 10 minutes of TLV when switching between the operated sides (group B). Arterial blood gas samples were taken at TLV before surgery, at 2 minute intervals during OLV, and during the period of TLV when switching between the operated sides. RESULTS: In group A, the significantly decreased PaO2 was observed during TES of the second side compared with TES of the first side (P < 0.01). In group B, there was no significant difference in PaO2 except 2 minutes after OLV. PaO2 during TLV and 4 and 6 minutes after OLV of the second side TES in group A significantly decreased compared with those of group B (P < 0.05). The lowest PaO2 during OLV of the second side TES was significantly lower in group A (93.5 +/- 28.7 mmHg) than in group B (154.1+/- 48.3 mmHg). CONCLUSIONS: A significantly decreased PaO2 was observed during TES of the second side, compared with TES of the first side, and time was needed after lung collapse for its full oxygenation function to recover.
Anoxia ; Humans ; Lung ; One-Lung Ventilation* ; Oxygen ; Pulmonary Atelectasis ; Ventilation*