[Mature Cystic Teratoma of the Mediastinum with Carcinoid Component].

Carcinoid arising from a mature cystic teratoma of the mediastinum is extremely rare. A 30-year-old man complaining of chest pain was admitted to our hospital for abnormal shadow in right mediastinum on chest tomography. Computed tomography (CT) and magnetic resonance imaging (MRI) suggested mature teratoma. Complete resection under video-assisted thoracotomy was performed. The postoperative course was uneventful. Histological diagnosis was mature cystic teratoma containing 3 mm component of carcinoid in the capsule. There were no pathological findings of necrosis and MIB-1-index was 1 %. No recurrence has been observed for 7 months after surgery.

[Central Type Squamous Cell Lung Cancer Incidentally Found by the Treatment of Pneumothorax;Report of a Case].

A 69-year-old man who arrived at our hospital by ambulance with dyspnea was diagnosed with pneumothorax. The chest was drained, but the left lung failed to expand due to air leakage. A pulmonary fistula in the left lower lobe identified by video-assisted thoracic surgery was repaired. Postoperative chest radiography showed inadequate expansion of the left upper lobe. Bronchoscopy revealed an obstruction of the left upper bronchus that was pathologically diagnosed as squamous cell carcinoma. Enhanced computed tomography revealed a central tumor with atelectasis of the left upper lobe, and a stained node in the left lower lobe. Clinical T4N1M0 stage III A lung cancer was confirmed. The patient was treated with concurrent chemoradiotherapy. It was likely that the lung cancer in the upper bronchus caused the atelectasis, leading secondary expansion of the lower lobe and the rupture of a bulla.

[Establishment of Preoperative Diagnosis Helpful in Choosing Minimal Surgical Procedure for Resecting Intrapulmonary Solitary Fibrous Tumor;Report of a Case].

Intrapulmonary solitary fibrous tumor (SFT) arising from the parenchyma of the lung is very rare. Few limited surgery have been performed because preoperative and intraoperative diagnosises of SFT are so difficult. We here report a case of intrapulmonary SFT which was able to be resected by segmentectomy by preoperative diagnosis. A 77-year-old man, who was found to have an abnormal nodule in right lower lobe on computed tomography (CT), was admitted to our hospital. Fluorodeoxyglucose-positron emission tomography (PET) showed a slight uptake in the nodule. By CT guided needle biopsy, the nodule was diagnosed as intrapulmonary SFT pathologically. We could choose segmentectomy as a surgical procedure by preoperative diagnosis.

Evaluation of the disinfective efficacy of povidone-iodine with the use of the transparent film dressing OpSite Wound.

To determine the duration of efficacy of disinfection with povidone-iodine (PVP-I) conducted before application of OpSite Wound (Smith and Nephew, UK), bacteriological evaluation was carried out. In 9 healthy adults, 3 sites on the forearms or other parts were chosen for application of OpSite Wound after adequate disinfection with PVP-I. As compared to the bacterial count score of 1.67-2.00 before disinfection, a significant reduction of the score was observed on removal of OpSite Wound on days 1, 2 and 3. The score of 0.5-0.67 immediately after disinfection did not change or deteriorate until removal of OpSite Wound. This finding supports the fact that unnecessary dressing changes could be avoided postoperatively for at least 3 days by disinfection with PVP-I and application of OpSite Wound particularly for operations categorized as 'clean surgery'.