• Journal of Chest Surgery
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• v.40 no.4 s.273
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• pp.317-320
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• 2007

Neurogenic tumors are the most common posterior mediastinal tumors and accounting for $19{\sim}39%$ of all mediastinal tumors and 75% of all posterior mediastinal tumors. Neurofibromatosis is an autosomal dominant disorder with variable expression of tumors, including neurologic tumors of the peripheral nerves, nrve roots, and plexi. A posterior mediastinal neufibroma in neurofibromatosis patients is rare. We report here a case of posterior mediastinal neurofibroma in a patient with type 1 neurofibromatosis.

• Journal of Chest Surgery
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• v.29 no.10
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• pp.1148-1151
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• 1996

For the purpose of clinical analysis In mediastinal tumors, 51 patients with mediastinal tumor who were surgically treated from February 1984 to February 1994 in Chunan hospital of Soonchunhyang university were reviewed. There were 21 male and 30 female patients in the study. Age ranges from 11 months to 75 years, with the mean 39.4$\pm$ 18.8 years. Symptoms and signs were asymptom(21.6%), chest d scomfort(19.6%), dyspnea(15.7%), ptosls(15.7%), general weakness(13.7%) and chest pain(9.8%). The most frequent tumor location was anterosuperior mediastinum(60.8%) followed by posterior(25.5%) and middle(13.7%) mediastinum. In the pathological viewpoint, thymoma(33.3%) was the most frequent type followed by neurogenic tumor(25.5%) an'd germ cell tumor(19.6%). All of benign tumors(46 cases) were completely removed and malignant tumors(5 cases) were treated with rAdiotherapy after operation. The postoperative complications were 2 wound dehesences, 1 pneumothorax, 1 vocal cord palsy and 1 prolonged mechanical ventilation.

• Journal of the Korean Society of Radiology
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• v.82 no.5
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• pp.1246-1257
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• 2021

Purpose To assess the predictive factors and describe the imaging features of mediastinal lymph node (MLN) metastases in patients with head and neck cancer. Materials and Methods We compared the clinical features and disease characteristics (sex, age, site of primary tumor, histologic type, history of prior treatments, TNM stages, and metastasis in cervical LNs) of patients with head and neck cancers between the MLN metastasis and no MLN metastasis groups. We also evaluated the chest CT (distribution and maximum dimension of the largest LN) and PET/CT (maximum standardized uptake value) features of MLN metastases based on the MLN classification. Results Of the 470 patients with head and neck cancer, 55 (11.7%) had MLN metastasis, involving 150 mediastinal stations. Hypopharynx cancer, recurrent tumor, T4 stage, N2/N3 stages, and M1 stage were found to be significant predicting factors for MLN metastasis. The most common location of MLN metastasis was ipsilateral station 2 (upper paratracheal LNs, 36.4%), followed by ipsilateral station 11 (interlobar LNs, 27.3%) and ipsilateral station 10 (hilar LNs, 25.5%). Conclusion Metastasis to MLNs should be considered in patients with head and neck cancer, especially in cases that are associated with a hypopharyngeal cancer, recurrent tumor, and high TNM stages.

• Journal of Chest Surgery
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• v.31 no.4
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• pp.436-439
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• 1998

Mediastinal teratoma is a tumor that thoracic surgeons made an operation much less commonly than other mediastinal masses and most of them are asymptomatic. But very rarely, this tumor invades the pleura and pericardium resulting in pleural effusion, pericardial effusion and cardiac tamponade in severe cases. The mechanism of invasion and perforation of the tumor is unknown and tumor-consisting tissue factor is suspected of a cause. In this case, we operated on a patient whose anterior mediastinal teratoma invaded and perforated pericardium and pleura resulting in pericardial effusion and pleural effusion. The patient was improved and discharged with no problem after resection of mass and involved pericardium.

• Journal of Chest Surgery
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• v.29 no.1
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• pp.125-128
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• 1996

The primary mediastinal liposarcoma is a very rare tumor. It mainly causes respiratory symptoms, but can be asymptomatic. The most favorable treatment of primary mediastinal liposarcoma is a surgical removal, whether it is complete or not, regardless of the size or histologic type of the tumor. The survival is determined by the histologic type of tumor. A 34-year- ld man was admitted because of asymptomatic mediastinal tumor which was progressively growing over 6 years. The tumor was completely resected and the microscopic findings of the tumor were compatible with well-differentiated liposarcoma. The patient recovered and discharged without complication on the 7th postoperative day.

• Journal of Chest Surgery
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• v.39 no.10 s.267
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• pp.802-804
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• 2006

Malignant fibrous histiocytoma (MFH) is a tumor which most often develops in the soft tissues of the extremities and retroperitoneum, but very rarely originates in the mediastinum. We report a 71-year-old man who admitted with anterior mediastinal tumor and underwent surgical resection of tumor in our hospital. The mass was histologically confirmed as MFH.

• Journal of Chest Surgery
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• v.32 no.8
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• pp.768-771
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• 1999

A 45 year old man was admitted for further examination of an abnormal shadow of the right posterior mediastinum. The patient suffered from dysesthesia in the right thoracic wall of dermatome T7. CT scan and MRI revealed that two separate tumors had developed in the right paravertebral area linked to the vertebral canal via an intervertebral foramina. One-stage removal of the tumors were performed safely through the right posterolateral thoracotomy following the resection of the rib head and vertebral pedicle. The tumors were confirmed as histologically neurilemomas. The postoperative course was uneventful.

• Journal of Chest Surgery
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• v.35 no.11
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• pp.807-811
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• 2002

Due to its less invasive nature and superior visual field, video-assisted thoracescopic excision of mediastinal mass is thought to be comparable to open thoracotomy. Material and Method : From January 1995 to August 2001, the medical records of 38 patients who underwent video-assisted thoracoscopic excision of mediastinal mass was retrospectively analyzed. The outcome of these patients were compared with 5 patients who converted to thoracotomy Result: Male to female ratio was 13(34.2%) : 25(65.8%), and mean age was 39.2$\pm$35.4 years. Regarding the pathology, there were 8 neurilemmomas(21.1%), 6 thymic cysts (15.8%), 5 teratomas(13.2%), 5 ganglioneuromas(13.2%), 4 bronchogenic cysts(10.5%), 3 pericardial cysts(7.9%), 3 thymomas(7.9%), and 2 lymphangiomas(5.3%). The mean operation time was 110.6$\pm$7.0 minutes, mean postoperative tube stay was 4.2$\pm$0.4 days, mean postoperative hospital stay was 5.2$\pm$0.4 days, and mean number of injection of analgesics was 1.9$\pm$0.4 times. Although the mean values for the above indices were less than those of the thoracotomy conversion cases, they were statistically insignificant. Postoperative complications of videoassisted thoracoscopic excision included chylothorax, prolonged air leakage, and unilateral phrenic nerve palsy, all of which recovered before patient discharge. There was, however, permanent unilateral ptosis in one patient. Conclusion : As video-assisted thoracoscopic excision of mediastinal mass is safe, less painful, conducive to earlier recovery and cosmetically more appealing, a more active application of this technique is recommeded.

• Journal of Chest Surgery
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• v.30 no.1
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• pp.55-60
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• 1997

We reviewed 40 cases of primary mediastinal tumors which were operated on at Seoul Paik Hospital from September, 1987 to December, 1995. Of these, 18 were male and 22 were female. The patient ranged in age from 4 years to 68 years with a mean age of 34.1 years. The most common symptoms included chest pain(12.5%), cough(12.5%), dyspnea(7.5%). and palpable neck mass(7.5%), and symptoms were absent at the time of diagnosis in 37.5% of cases. Chest roentgenography and computed tomography(CT) were performed in all patients, and magnetic resonance imaging(MRI) in 5 patients, and transthoracic needle aspiration (TTNA) performed In 22 patients. The sensitivity of TTNA was 72.7%(16 of 22 patients). The lesion was located 60% in the anterosuperior mediastinum, 35% in the posterior mediastinum, and 5% in the middle mediastinum. The primary tumors included thymic neoplasms(11 cases), germ cell tumors(7 cases), neurogenic tumors(10 cases) and a miscellaneous group. The malignant tumors(12.5%) were invasive thymoma(3 cases), spindle cell sarcoma(1 case), and non-Hodgkin's Iymphoma(1 case). A complete excision was done in all 35 benign tumors and 3 malignant tumors. There was no operative mortality, and postoperative complications occurred in 3 cases.

• Tuberculosis and Respiratory Diseases
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• v.48 no.1
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• pp.96-102
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• 2000

Granular Cell Tumors(GCT) were originally described as myoblastic myomas. This tumor is believed to originate from Schwann cells based on subsequent scientific investigations. Although it usually appears in the head and neck, it can also appear in other organs as well. Endobronchial granular cell tumors are rather rare and should be differentiated from other common endobronchial diseases such as bronchogenic carcinoma and endobronchial tuberculosis, especially. A case of a patient with an extremely rare condition of endobronchial granular cell tumor concurrent with malignant mediastinal tumor is reported.