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Publications (7)7.48 Total impact

  • Article: Dissection and rupture of the left subclavian artery presenting as hemothorax in a patient with von Recklinghausen’s disease
    Kazunori Yoshida, Satoshi Tobe
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    ABSTRACT: Hemothorax is a rare and life-threatening complication of von Recklinghausen’s disease. We present a case of a 48-year-old man with this disease who developed hemothorax caused by rupture of a left subclavian artery dissection. To our knowledge, the case presented here is the first to describe successful surgical management—graft replacement of the left subclavian artery—in hemothorax due to arterial dissection associated with von Recklinghausen’s disease.
    The Japanese Journal of Thoracic and Cardiovascular Surgery 04/2012; 53(2):117-119.
  • Article: Surgical treatment for recurrent pulmonary artery sarcoma.
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    ABSTRACT: A 72-year-old woman with a history of surgical treatment for pulmonary artery sarcoma was admitted with a chief complaint of progressive dyspnea. Transthoracic echocardiography, computed tomography, magnetic resonance imaging, and right cardiac catheterization demonstrated that the tumor had recurred in the right ventricular outflow tract (RVOT) with severe stenosis. Palliative resection of the tumor was performed with cardiopulmonary bypass to relieve the RVOT obstruction. The postsurgical quality of life of the patient improved. Postoperative right cardiac catheterization indicated hemodynamic improvement and no sign of stenosis around the RVOT. About 1 year postoperatively, she is in stable condition and has 5-year-survival from the initial operation.
    General Thoracic and Cardiovascular Surgery 02/2008; 56(1):28-31.
  • Article: Primary pulmonary valve papillary fibroelastoma.
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    ABSTRACT: Papillary fibroelastoma (PFE) is a rare and benign cardiac tumor typically found on the valvular endocardium. In most cases, PFE is identified incidentally on echocardiography or during cardiac surgery. The patient was a 73-year-old man who had been treated for hepatocellular carcinoma for 5 years. On echocardiography, a 2.5-cm diameter mass was detected in the pulmonary trunk just above the pulmonary valve. Through a transpulmonary arterial approach with cardiopulmonary bypass, the mass identified on the commissure of the right and posterior pulmonary cusp was surgically excised together with the attached endocardium. Despite the benign histology of PFE, lethal embolic events such as stroke, myocardial infarction, and pulmonary embolism are reported in some cases. To prevent such complications, tumor identification and surgical excision are essential.
    The Japanese Journal of Thoracic and Cardiovascular Surgery 08/2006; 54(7):308-10.
  • Article: Acquired von Willebrand disease type IIA in patients with aortic valve stenosis.
    Kazunori Yoshida, Satoshi Tobe, Masahito Kawata
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    ABSTRACT: The authors report the case of a 72-year-old woman with severe aortic stenosis who had a bleeding tendency develop due to type IIA acquired von Willebrand disease. She underwent aortic valve replacement with a 19-mm Freestyle stentless valve (Medtronic Inc, Minneapolis, MN). The postoperative course was uneventful and the bleeding tendency resolved. A review of this operative case from our institution demonstrated that aortic valve replacement was one of the most effective treatments of this disease, which can be potentially lifesaving.
    The Annals of thoracic surgery 04/2006; 81(3):1114-6. · 3.74 Impact Factor
  • Article: Acquired and reversible von Willebrand disease with high shear stress aortic valve stenosis.
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    ABSTRACT: Severe aortic valve stenosis is relatively more prevalent in patients with repeated bleeding episodes. The goal of the present study was to determine the effect of aortic valve replacement on von Willebrand factor levels in patients with aortic stenosis. von Willebrand factor levels were assessed by using immunoblotting electrophoresis techniques before and 1 month after surgery in 29 consecutive patients with severe aortic valve stenosis. Eight of 29 patients reported episodes of bleeding, including three episodes of major bleeding, in the 6 months before surgery. None of the patients were receiving anticoagulation therapy. Although there was no difference in platelet count before and after surgery, von Willebrand factor levels were significantly greater at 1 month after surgery (p = 0.05) when compared with preoperative values. Further, von Willebrand factor levels were significantly lower in patients with aortic valve prosthesis mismatch than in those patients without this phenomenon (p < 0.05). Electrophoresis experiments showed a deficit in large multimers of von Willebrand factor preoperatively but not postoperatively, except for in those patients with aortic valve prosthesis mismatch. In conclusion, valve replacement can result in increases in von Willebrand factor in patients with aortic valve stenosis.
    The Annals of thoracic surgery 02/2006; 81(2):490-4. · 3.74 Impact Factor
  • Article: Dissection and rupture of the left subclavian artery presenting as hemothorax in a patient with von Recklinghausen's disease.
    Kazunori Yoshida, Satoshi Tobe
    [show abstract] [hide abstract]
    ABSTRACT: Hemothorax is a rare and life-threatening complication of von Recklinghausen's disease. We present a case of a 48-year-old man with this disease who developed hemothorax caused by rupture of a left subclavian artery dissection. To our knowledge, the case presented here is the first to describe successful surgical management--graft replacement of the left subclavian artery--in hemothorax due to arterial dissection associated with von Recklinghausen's disease.
    The Japanese Journal of Thoracic and Cardiovascular Surgery 03/2005; 53(2):117-9.
  • Article: Right ventricular outflow tract reconstruction for primary pulmonary artery sarcoma.
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    ABSTRACT: Primary pulmonary artery sarcoma is extremely rare and a lethal tumor. Complete resection of the tumor and following adequate reconstruction is the only hope for cure and prolonged survival. We report a case of successful surgical excision of primary pulmonary artery sarcoma involving pulmonary trunk, pulmonary valve and right ventricular outflow tract wall, which were replaced with prosthetic valved conduit. Postoperative histopathological diagnosis was leiomyosarcoma. The patient is well without any evidence of recurrence at 10 months after surgery.
    The Japanese Journal of Thoracic and Cardiovascular Surgery 04/2004; 52(3):139-42.