• Journal of Chest Surgery
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• v.28 no.5
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• pp.530-532
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• 1995

The teratomas seem to be the most common mediastinal tumor in Korea. However, the immature teratomas are the rarest type of these mediastinal teratomas. A case of immature teratoma of the mediastinum occurring in a newborn male is reported. He suffered from severe dyspnea since birth. Simple chest X-ray and chest sonogram revealed huge mass shadow in fight whole lung field. On 6th day after birth, the operation was done and the mass was completely excised. Biopsy showed elements of mature tissues derived from 3 germ cell layers including immature neuronal components. The baby is well without evidence of disease till now.

• Tuberculosis and Respiratory Diseases
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• v.66 no.2
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• pp.127-131
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• 2009

Most mediastinal teratomas are histologically well-differentiated tumors and benign. The majority of patients with a mediastinal teratoma are asymptomatic and their tumors are usually discovered incidentally on chest radiography. On rare occasions this tumor will rupture spontaneously into the adjacent organs. A 72-year-old female patient was admitted for dyspnea and she had a multiloculated pleural effusion in the left lung field. Although repeated pleural biopsy and pleural fluid cytology did not prove the presence of malignancy, we assumed that this was a malignant effusion because it revealed consistently high levels of carcinoembryonic antigen and carbohydrate antigen 19-9, and the chest CT scan did not show typical fat or bone density in the mass. Secondary infection and an uncontrolled septic condition due to pleural empyema finally compelled the patient to undergo a surgical operation. Mature teratoma was the final diagnosis and she has done well without recurrence for 2 months.

• 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 Veterinary Clinics
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• v.23 no.2
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• pp.91-95
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• 2006

Chiari type 1 malformation is a developmental condition characterized by cerebellar herniation and syringohydromyelia in human beings. It has been reported as a common condition in the cavalier King Charles spaniel that is similar to human Chiari type 1 malformations. However, there are few documentations of diagnosed Chiari type 1 like malformation in other breed dogs. Abnormalities compatible with such a malformation were identified by magnetic resonance imaging in 24 dogs with neurologic signs in this study. The dogs were 15 females and 9 males. Their breed were variable, and 6 of the dogs were maltese, 5 were shih-tzu. The dogs had a variety of neurological signs and the severity of cerebellar herniation, syringohydromyelia, intracranial intra-arachnoid cyst or hydrocephalus.

• Journal of Gastric Cancer
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• v.3 no.3
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• pp.158-160
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• 2003

Gastric teratoma (GT) is an exceeding rare lesion seen most often in male infants, comprising less than $1\%$ of all teratomas in children. A 2-day-old male child was preoperatively diagnosed to have gastric teratoma on ultrasonogram and abdominal computed tomography (CT). On laparotomy, Dumbbell- shape GT was located on lesser curvature of stomach and complete excision of the tumor was performed. The histological examination revealed immature teratoma of the stomach. The child is well 10 months after surgery.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.6 no.2
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• pp.197-201
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• 2003

Gastric teratoma is an extremely rare neoplasm in children which account for less than one percent of all teratomas. Unlike other teratomas, most reported gastric teratomas was benign except one case and occurred predominantly in boys. Additionally, gastric teratomas present in the first year of life as a palpable mass, abdominal distension, vomiting, hematemesis or respiratory distress. Patients with gastric teratomas have an excellent prognosis after complete excision of the tumor. We report a case of immature gastric teratoma in an one-day-old boy, which was diagnosed by abdominal sonography and CT scan, and confirmed by surgery.

• Journal of Chest Surgery
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• v.25 no.4
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• pp.435-437
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• 1992

We experienced one case of immature teratoma at anterior mediastinum. the patient was Syears old female whose complain were cough and chest pain. Chest film showed mass density St the lower half of the Rt chest. Chest CT showed inhomogenous mass which have some calcified area. At the time of operation, 12x10x13cm sized mass have smooth surface and its stump elongated to the thymus. a-FP level, preoperative 22.5ng/ml, was decreased to 9.7ng/ml after operation. Postoperative adjuvant chemotherapy was performed with Vinblastin, Bleomycin and Cisplatin combination. The patient had an uneventful postoperative or postchemotherapy course and was discharged in a good condition.

• Journal of Chest Surgery
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• v.5 no.2
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• pp.147-152
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• 1972

This is a report on the 4 cases of benign mediastinal teratoid tumor in the Department of Thoracic Surgery Chonnam University Hospital during the period from August, 1961 to August ,1972. All the tumors were teratomas which had three germinal layers and located in the anterior mediastinum. All the cases had symptoms such as Pancoast syndrome. exertional dyspnea, middle lobe syndrome with fistulous Connection to the cyst and retrosternal discomfort. X-ray studies are essential to recognize the tumor and its location. It`s believed that a exploratory thoracotomy is recommended because of the complications of the tumors and a possibility of malignancy.

• Tuberculosis and Respiratory Diseases
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• v.58 no.2
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• pp.184-187
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• 2005

The Mixed germ cell tumors of the mediastinum are very quite rare. The Prognosis is generally dominated by the most aggressive component, which is represented by a choriocarcinoma, an endodermal sinus tumor, an embryonal carcinoma, and a seminoma, in descending order of in the degree of malignancy. We experienced one a case of a mixed germ cell tumor at the anterior mediastinum. The patient was 27-year-old male, who complained of hemoptysis and cough. The Chest X-ray showed a well-defined lobulated mediastinal mass in the left upper lung field. The operation was done and The mass was excised surgically. A Biopsy showed elements of mature tissues, immature neuronal components, and seminoma components.

• 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.