• Journal of Chest Surgery
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• v.23 no.6
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• pp.1270-1274
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• 1990

In mediastinum, teratoma frequently occur in anterior mediastinal compartment. Rarely discovered in pericardium, posterior mediastinum and lung parenchyme. The incidence of posterior mediastinal teratoma was 3%~8%. A young male patient was treated with posterior mediastinal teratoma. So we describe the rare disease.

• Journal of Chest Surgery
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• v.33 no.6
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• pp.521-524
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• 2000

The benign teratoma is usually slow growing tumor, but we expirienced a case of primary huge mediastinal benign teratoma that had grown very rapidly, maximally during 3 years. The 14-year-old female patient was admitted to our hospital because of abnormal chest X-ray that showed 10$\times$10cm sized well definded mass with multiple calcificactions. but the mass was not present in chest X-ray perfomed on 3 years prior to admission. Under the diagnosis of teratoma, complete surgical resection was done by the left thoracotomy. The result of pathology was benign teratoma.

• Journal of Chest Surgery
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• v.13 no.2
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• pp.138-142
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• 1980

mediastinal teratomas are encountered commonly in adult life, and rarely in childhood. Characteristically, these mediastinal teratomas are located anteriorly with only rare examples in the posterior mediastinum. The cystic teratoma usually behaves as a benign neoplasm, but the solid [non-cystic] teratoma is frequently malignant. We experienced a case of large anterior mediastinal cystic teratoma in a two-years old boy, which was treated by complete surgical excision with good result.

• Journal of Chest Surgery
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• v.10 no.1
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• pp.59-64
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• 1977

Mediastinal tumor are frequently encountered in clinical practice. Hanten, in 1955, reported-2 adult patients with spontaneous rupture of mediastinal dermoid cysts into the pleural cavity and also, Thompson, in 1963, reported 2 child patients with spontaneous rupture of mediastinal teratoma into the pleural cavity. Mediastinal teratomas have also been reported rupture into other contiguous structures, such as the bronchus, aorta, pericardium, SVC and esophagus. This report presents an instance of spontaneous rupture of an anterior mediastinal teratoma into the right pleural cavity of a 43 year old female. Despite variable diagnostic procedures, the true nature of the lesion was not determined until a thoracotomy and window formation was performed for adequate drainage of empyema thoracis. Removal of the teratoma and mediastinal window formation resulted in complete cure.

• Journal of Chest Surgery
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• v.46 no.4
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• pp.305-308
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• 2013

We report a rare case of rhabdomyosarcoma spontaneously arising in an anterior mediastinal teratoma in a 47-year-old male. The patient was found to have an anterior mediastinal mass on a chest X-ray, which was taken two months before his presentation to Asan Medical Center. A subsequent computed tomography scan revealed an $8.9{\times}7.1{\times}8.0$ cm heterogeneous mass in the anterior mediastinum. He underwent an excision via median sternotomy. The histopathologic study identified a mature teratoma with embryonal rhabdomyosarcoma.

• Journal of Chest Surgery
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• v.17 no.2
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• pp.299-304
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• 1984

Tumors of the mediastinum are usually classified according to their location in the anterior, middle, or posterior mediastinum. Mediastinal teratomas are characteristically located at anterior mediastinum with only rare incidence in the posterior mediastinum. Two cases of posterior mediastinal teratoma were experienced recently, in the department of thoracic surgery, Seoul National University Hospital. The incidence of posterior mediastinal teratoma was 4.2% among 48 mediastinal teratomas in our experience. Two cases are all benign teratoma located at right posterior costophrenic angle, and histologically showed tissues from three germ layers including bone and fat.

• Journal of Chest Surgery
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• v.15 no.2
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• pp.169-173
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• 1982

We have experienced two cases of complicated teratoma in anterior mediastinum. One case, 1-year-old female, has a huge anterior mediastinal teratoma involving almost all of the left pleural cavity with atelectasis of the left lung. The other case, 12-year-old female, has a anterior mediastinal teratoma with fistula between the teratoma and the bronchus of anteromedial basal segment of left lung. The bronchus has a bronchiectatic change with cell infiltration. We performed exploratory thoracotomy with complete excision of tumor mass in both cases and with additional resection of anteromedial basal segment of the left lung due to inflammation and necrosis in latter case. The patients had uneventful postoperative courses and were discharged in good condition. Histopathologic diagnosis of these were benign teratoma consist of skin, skin appendages, cartilage, connective tissue, and gut.

• Journal of Chest Surgery
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• v.28 no.6
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• pp.644-648
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• 1995

Intrapulmonary teratoma is rare : only 30 cases have been reported in the world literature. We had experienced a case of benign intrapulmonary teratoma originated from anterior mediastinum associated with broncho-tumorous fistula, which was treated with En bloc removal of tumor and right middle lobectomy. Post-operative course was not eventful.

• Journal of Chest Surgery
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• v.39 no.9 s.266
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• pp.729-732
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• 2006

Mediastinal teratoma is one of the most common lesions found in the anterior mediastinum, accounting for $8\sim13%$ of all mediastinal tumors. This tumor is incidentally detected by routine chest roentgengography, but pericardial perforation or pleural effusion occurs rarely. In our patient cardiac tamponade was developed due to anterior chest wall contusion, we confirmed the anterior mediastinal tumor. Vital signs were stabilized after the pericardiocentesis, and the patient underwent the tumor resection in the anterior mediastinum for a definite treatment. On histologic examination, the tumor revealed cystic structures composed of mature squamous epithelium, pilosebaceous glands, mature fat tissue, gastrointestinal mucosa, respiratory epithelium, and pancreatic tissues.

• Tuberculosis and Respiratory Diseases
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• v.47 no.3
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• pp.400-405
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• 1999

Mediastinal teratomas are rare and represent less than 10 per cent of all mediastinal tumors. Almost all arise in the anterosuperior mediastinal compartment, and most symptoms, when present, result from compression of adjacent structures. They contain different tissues derived from all three germinal layers, with the prevalence of ectodermal elements which can include hair, teeth and sebaceous material. Benign teratomas may rupture into adjacent organs. Up to 36% of all mediastinal teratomas rupture, most frequently into the lung and bronchial tree, followed by the pleural space, pericardial space, or great vessels. The signs and symptoms of a ruptured teratoma vary with the structures involved. We report a case of mediastinal teratoma ruptured spontaneously in a 18 year old female who experienced 4 or 5 times of hemoptysis for 1 year and sudden onset of pleural effusion, pericardial effusion and pneumonia.