• Journal of Chest Surgery
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• v.42 no.4
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• pp.537-539
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• 2009

A 47-year old woman was admitted to our hospital for removal of a known mass that was located on the suprasternal notch; specifically, the mass was located on the supero-anterior mediastinuum. The mass was removed by a cervical incision and the histopathologic diagnosis of the resected specimen was hererotopic thyroid tissue with nodular hyperplasia. Mediastinal hererotopic thyroid tissue is a rare malady, so we report here diastinal hererotopic thyroid tissue and we review the relevant medical literature.

• Journal of Chest Surgery
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• v.43 no.5
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• pp.542-545
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• 2010

Extramedullary hematopoiesis is a common compensatory mechanism of chronic anemia, but an asymptomatic posterior mediastinal mass is rarely diagnosed as an extramedullary hematopoiesis after surgical resection. The differential from neurogenic tumors is important, but fine needle aspiration biopsy is not recommended because of the difficulty of approach and risk of bleeding. Although diagnosis and treatment can involve resection via thoracotomy, video-assisted thoracic surgery may also be a useful strategy. We performed video-assisted thoracic surgery on a 59-year-old man for posterior mediastinal extramedullary hematopoiesis, with no evidence of recurrence or related hematologic diseases.

• Journal of Chest Surgery
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• v.34 no.2
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• pp.198-201
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• 2001

지방모세포종은 태생기 지방조직에서 기원하는 드문 양성종양으로 대부분 소아기에 발생하는데 이 종양의 약 70%는 사지에서 나타나고 간혹 다른 부위에서 보고되기도 한다. 저자들은 좌측 후종격동과 좌측 쇄골상부에 양성 지방모세포종을 보인 3세된 남아를 치험한바 있다. CT 소견상 지방을 함유한 종괴가 정상적인 흉강내 구조물을 누르고 있었고, 쇄골상부 및 종격동으로부터 합병증없이 절제되었다. 종괴는 황색을 띠었으며, 병리조직검사상 지방모세포종으로 진단되었다.

• Journal of Chest Surgery
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• v.36 no.1
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• pp.59-62
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• 2003

Mediastinal parathyroid cyst is a very rare disease and is usually found incidentally. Surgical excision is the treatment of choice and recurrence is very rare when complete excision is done. A 71-year-old man was referred to our department because of 6$\times$5cm sized right superior mediastinal mass found incidentally on chest X-ray Surgical excision was performed and pathologic findings were confirmed as mediastinal parathyroid cyst. The patient has been followed up postoperatively without recurrence for 4 months up to now. We report a case of mediastinal parathyroid cyst.

• Journal of Yeungnam Medical Science
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• v.6 no.2
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• pp.79-90
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• 1989

Computerized Tomography is now well established and important noninvasive method of diagnosting mediastinal mass lesions because of its superior imaging of their size, location and internal composition. Authors ana lysed and present CT findings of 30 surgically proven mediastinal tumors and cysts that were studied and treated at the Yeungnam University Hospital during recent 6 years. The most common tumor was thymona(9 cases), and teratoma(6 cases), lymphoma(6 cases), bronchogenic cyst(4 cases), neurogenic tumor (4 cases), pericardial cyst(1 case) were next in order of frequency. There were 5 cases of thymoma showing homogenous solid density mass, 2 cases were malignant thymoma and myasthenia gravis was present in 2 cases. A case of thymolipoma and a case of thymic carcinoma were included. All teratomas were cystic masses but pathognomic fat, and calcified density were seen only in 4 cases. 5 cases were located in anterior mediastinum and 1 case was in posterior mediastinum. Lymphoma(3 Hodgkin's and 3 non-Hodgkin's) appeared as irregular lobulated mass in anterior mediastinum. Neurogenic tumor(2 ganglioneuroma and 2 neurilemmoma) appeared as homogenous density mass located in posterior mediastinum. Among the 4 bronchogenic cysts, 2 were located in retrotracheal area, 1 was located in subcarinal and 1 was in parathoracic area. One case of pericardial cyst was oval shaped cystic mass located in left pericardiac border.

• Journal of the Korean Society of Radiology
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• v.83 no.3
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• pp.744-749
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• 2022

Fibrosing mediastinitis is a rare benign disorder characterized by the proliferation of dense fibrous tissue within the mediastinum. It typically manifests as localized or infiltrative soft-tissue masses in the middle mediastinum or hilar area, which cause compression and encasement of adjacent mediastinal structures, such as the vessels or airway. Here, we report a rare case of fibrosing mediastinitis in a 13-year-old girl that presented as a middle mediastinal mass lesion on CT scan with obliterating left lower lobar bronchus. The patient's symptoms and follow-up chest CT showed significant improvement following systemic corticosteroid treatment. As fibrosing mediastinitis can improve with systemic steroid therapy, radiologists must be aware of its radiologic findings when discriminating between infiltrating soft tissue lesions in the mediastinum.

• Journal of Chest Surgery
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• v.29 no.11
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• pp.1281-1283
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• 1996

We describe the case of a 58-year-old woman who has coexisting intrapulmonary and mediastinal leiomyomas. Initially, she was seen with a single mass in the right lower hilar area in a simple chest roentgenogram. But computed tomography demonstrated another mass in the right posterior mediastinum. Microscopic examination and immunohistochemical staining of the resected specimens showed the characteristics of the leiomyoma.

• Journal of Chest Surgery
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• v.36 no.2
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• pp.113-117
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• 2003

Idiopathic mediastinal fibrosis is very rare. We report two cases of a 41-year-old man and 65-year-old man who presented with backache and vocal cord palsy, subsequently confirmed to be idiopathic mediastinal fibrosis. Preoperative chest computed tomography showed a mediastinal mass and thoracoscopic biopsy was preformed. The mass was hard, dense and partially calcified, and adhered the adjacent mediastinal structure. Postoperative medical treatment was not performed, and during 5 and 7 month follow-up has not demonstrated any complication.

• Journal of Chest Surgery
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• v.35 no.9
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• pp.697-700
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• 2002

Primary malignant melanoma of the mediastinum is extremely rare : To date, there have been only 8 cases reported in the literature. We report a case of a 50-year-old woman presented with an anterior mediastinal mass. The mass invaded the lung parenchyme of right upper lobe, which was wedge-resected with the mass. Microscopically, spindle or polygonal tumor cells with prominent nucleoli and intracytoplasmic melanin pigments are characterized and Fontana stain confirmed the presence of melanin pigment. Immunohistochemical studies showed diffuse positive staining for HMB45, S100 protein and vimentin, which further suggested melanoma.

• Journal of Chest Surgery
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• v.43 no.5
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• pp.553-556
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• 2010

A 55-year-old female presented to Pusan National University Yangsan Hospital with left neck and shoulder pain. An anterior mediastinal mass was detected on chest CT and there were no other specific lesions in the lung or pleural cavity. An infected pericardial cysts was suspected and excision was performed through a left-sided VATS approach. The patient was discharged on the second post-operative day with left diaphragm palsy and praziquantel was prescribed after paragonimaisis was confirmed on pathology. The patient has not shown any particular problems at my outpatient clinic.