Masayuki Toishi

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OBJECTIVES Cases of lung cancer with pure ground-glass nodules (GGNs) have been detected with increasing frequency since the advent of computed tomography (CT), and growth is sometimes noted during follow-up. The objective of this study was to evaluate the potential predictive factors for pure GGN growth. MATERIALS AND METHODS We retrospectively examined(More)
OBJECTIVES Pulmonary ground-glass nodules (GGNs) are occasionally diagnosed as invasive adenocarcinomas. This study aimed to evaluate the clinicopathological features of patients with pulmonary GGNs to identify factors predictive of pathological invasion. METHODS We retrospectively evaluated 101 pulmonary GGNs resected between July 2006 and November 2013(More)
OBJECTIVES Vessel-sealing devices (VSDs) are widely used for various surgical procedures, including thoracoscopic surgery, but very few reports have compared their safety and usefulness with human thoracoscopic lobectomy procedures not employing VSDs. METHODS Primary lung cancer patients for whom a thoracoscopic lobectomy involving mediastinal lymph node(More)
OBJECTIVE Despite recent advances in video-assisted thoracoscopic lobectomy, some technical limitations still remain. Our current study purpose was to determine if the vessel sealing system (VSS) has utility in this procedure. METHOD 112 patients who underwent an anatomic pulmonary lobectomy at our institute were evaluated retrospectively. The burst(More)
Solitary capillary hemangioma of the lung (SCHL) is a rare benign tumor that is difficult to differentiate from other nodular lesions, including lung cancer, on CT. We report a case of 58-year-old man with an SCHL of the left lower lung. A nodular lesion 7 mm in size varied in CT appearance when the position of the patient was changed: it was part solid and(More)
Primary pulmonary malignant lymphoma is a rare disease that is thought to belong to a category of malignant lymphomas arising from mucosa-associated lymphoid tissue (MALT). We presented 2 cases of MALT lymphoma. Case 1: In a 39-year-old woman, an abnormal shadow was detected in chest radiography in the left S3. The diagnosis was organizing pneumonia in(More)
Spontaneous hemopneumothorax is a rare clinical entity sometimes requiring an operation in the early stage. Two patients who underwent successful video-assisted thoracic surgery (VATS) for spontaneous hemopneumothorax are presented. In both cases, the bleeding point was clearly identified, and hemostasis was easily obtained by clipping the point and placing(More)
Extensively drug-resistant tuberculosis is becoming a global threat. It is a relatively new phenomenon, and its optimal management remains undetermined. We report our experience in using pulmonary resection for treating patients with this disease. Records were reviewed of 54 consecutive patients undergoing a pulmonary resection for multidrug-resistant(More)
Thymidylate synthase (TS) is essential in thymidylate biosynthesis and DNA replication. Dihydropyrimidine dehydrogenase (DPD) is a rate-limiting enzyme in pyrimidine catabolism and is important in catabolism of 5-fluorouracil (5-FU). The significance of TS and DPD expressed in lung cancer remains controversial. Here we analyzed the relationship between TS(More)
In radical pulmonary resection for advanced lung cancer, reconstruction of the pulmonary artery (PA) can preserve the lung parenchyma. Reconstruction techniques have gained acceptance because they enable the surgeon to avoid pneumonectomy. Various techniques have been documented, such as direct suturing, end-to-end anastomosis, and a patch or conduit(More)