• Tuberculosis and Respiratory Diseases
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• v.76 no.3
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• pp.136-140
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• 2014

Pulmonary artery sarcoma (PAS) is a rare, poorly differentiated malignancy arising from the intimal layer of the pulmonary artery. Contrast-enhanced chest computed tomography (CT) is a good diagnostic modality that shows a low-attenuation filling defect of the pulmonary artery in PAS patients. An 18-year-old man was referred to our hospital for the evaluation and management of cavitary pulmonary lesions that did not respond to treatment. A contrast-enhanced CT of the chest was performed, which showed a filling defect within the right interlobar pulmonary artery. The patient underwent a curative right pneumonectomy after confirmation of PAS. Although lung parenchymal lesions of PAS are generally nonspecific, it can be presented as cavities indicate pulmonary infarcts. Clinicians must consider the possibility of PAS as well as pulmonary thromboembolism in patients with pulmonary infarcts. So, we report the case with PAS that was diagnosed during the evaluation of cavitary pulmonary lesions and reviewed the literatures.

• Tuberculosis and Respiratory Diseases
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• v.54 no.2
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• pp.230-235
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• 2003

A primary pulmonary artery sarcoma is a rare malignant tumor derived from the intimal layer of the pulmonary artery. Its clinical presentation can lead to a misdiagnosis of more common diseases such as thromboembolic disease. It is known to have a very poor prognosis. Therefore, the correct diagnosis of a primary pulmonary artery sarcoma is difficult and often delayed. We experienced a case of primary pulmonary artery sarcoma mimicking a pulmonary thromboembolism. The patient was admitted as a result of progressive dyspnea and coughing. The lung perfusion scan showed a large perfusion defect involving almost the entire right lung and suspicious small perfusion defects in the left upper lobe. Magnetic resonance imaging of the chest showed an enhancing nodule within the thrombus in the right pulmonary artery. The mass was removed completely by surgery, but the patient died as a result of shock.

• Journal of Chest Surgery
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• v.37 no.11
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• pp.929-932
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• 2004

The estimated relative incidence of primary pulmonary sarcoma to lung cancer is 0.4%. Furthermore, osteogenic sarcoma of the pulmonary artery is extremely rare. We report a case of a 63-year-old woman who visited our emergency room with the chief complaints of chest pain, dyspnea and dizziness. On echocardiography, right heart failure due to acute pulmonary artery embolism was diagnosed and we performed emergency operation. After opening the main pulmonary artery trunk, we found a mass attached to the arterial wall and massive thrombi around the mass. The mass was diagnosed as primary pulmonary artery osteosarcoma through postoperative evaluation. The patient received chemotherapy and radiotherapy. The patient is alive without specific symptoms 16 months postoperatively.

• Journal of Chest Surgery
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• v.35 no.9
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• pp.692-696
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• 2002

Pulmonary artery sarcoma is a rare disease and hard to diagnose; therefore, suspicion is very important for the diagnosis and treatment. Surgical resection is almost always needed because of progressive right heart failure. Adjuvant chemotherapy and radiation therapy are still controversial. We report a case of a 42-year-old man who had a right pulmonary arterial tumor Curative resection was impossible because the tumor invaded the left pulmonary artery. Palliative endarterectomy was performed followed by radiation therapy. The patient refused the chemotherapy. Until the postoperative 6th month, the residual tumor was stable. However, 15 months later, follow-up chest computed tomography revealed a metastatic pulmonary nodule at left lower lobe and the increased residual tumor. The patient received chemotherapy with limited tumor response. The metastatic nodule and residual tumor did not increase but bone scan revealed a rib metastasis at postoperative 24 months. He will be receiving additional chemotherapy.

• Korean Journal of Radiology
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• v.22 no.9
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• pp.1555-1568
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• 2021

Pulmonary embolism (PE) is a potentially fatal disease if the diagnosis or treatment is delayed. Currently, multidetector computed tomography (MDCT) is considered the standard imaging method for diagnosing PE. Dual-energy CT (DECT) has the advantages of MDCT and can provide functional information for patients with PE. The aim of this review is to present the potential clinical applications of DECT in PE, focusing on the diagnosis and risk stratification of PE.

• Journal of Chest Surgery
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• v.37 no.2
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• pp.184-187
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• 2004

The synchronous double cancer of the esophagus and lung is rare. Right lower lobectomy and Ivor Lewis procedure were performed simultaneously in a 75 year-old male patient who had synchronous double primary squamous cell carcinoma of the thoracic esophagus and right lower lobe of the lung, Left upper lobectomy was performed in a 69 year-old male patient who had squamous cell carcinoma of the left upper lobe of the lung, and four months later we performed Ivor Lewis procedure for the squamous cell carcinoma that occurred in the thoracic esophagus. The above two patients were doing well 10 months and 24 months after the operation respectively without recurrence. We treated the two cases of synchronous double cancer of the esophagus and lung with complete resection, and report this with review of literature.

• Journal of Chest Surgery
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• v.37 no.3
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• pp.286-291
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• 2004

Mediastinum is a very rare primary site of liposarcoma. In general, wide surgical excision with adequate resection margin is the treatment of choice for lipesarcoma. We experienced a case of liposarcoma in a 24 year-old male who complained of dyspnea and chest discomfort. Symptoms had been developed a month before admission, and the intensity had been gradually increased. He visited another general hospital, and there he received left closed thoracostomy because hemothorax was suspected. Afterwards, he was transferred to our hospital without a specific diagnosis, on review of outside chest computed tomography film, mass shadow was detected in the mediastinum. For the further evaluation, we checked the chest sonography and chest magnetic resonance imaging. MRI showed 10 cm sized mass contacted with pulmonary artery trunk and left main pulmonary artery. The radiologist strongly suggested sarcoma. On the 4th day after admission, we performed emergent exploratory left thoracotomy for hematoma evacuation because mediastinal shifting progressed and heart rate was increased. Biopsy confirmed that the evacuated materials were extraskeletal myxoid chondresarcoma, so we performed extrapleural left pneumonectomy including diaphragm and a part of the pericardium. The final pathologic diagnosis was myxoid/round cell liposarcoma. He was discharged without complication and systemic chemotherapy was scheduled to begin 2 month later. During chemotherapy, local recurrence and peritoneal metastasis developed, and he died 10 month after the surgical excision. We report this case with reviewal of literature.

• Tuberculosis and Respiratory Diseases
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• v.41 no.6
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• pp.658-662
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• 1994

The leiomyosarcoma is uncommon tumor that consists of 10% of all sarcoma incidence and commonly arise from retroperitoneum or mesentery. But leiomyosarcoma arose from mediastinum is very rare and only incidental case report is present. Mediastinal leiomyosarcoma may originate from superior vena cava, pulmonary artery, small vessels of alveoli, esophagus and cardiac muscle. Common symptoms that are related with leiomyosarcoma of mediastinum are cough and dyspnea but dysphagia, chest pain and hemoptysis can be produced. Although long term survival after complete resection of tumor was reported in localized disease, there was no effective therapy that prolong the survival in patients who had disseminated disease or huge tumor mass. We report the case of posterior mediastinal leiomyosarcoma confirmed by aspiration cytology and immunohistochemical staining, along with a review of literature.