• Tuberculosis and Respiratory Diseases
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• v.41 no.4
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• pp.429-434
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• 1994

Mucoepidermoid carcinoma of lung are rare carcinoma arising from the submucosal glands tissue of the proximal tracheobronchial tree. The carcinoma can be divided into low grade and high grade varienties. The most important factors in the prognosis include histological grading and the ability to achieve a complete surgical resection. We experienced a case of high grade mucoepidermoid carcinoma in pulmonary tuberculosis patient of 67 years old male who has been suffered from left chest pain for several weeks. He was not treated and died seventeen months later.

• Korean Journal of Head & Neck Oncology
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• v.17 no.1
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• pp.48-51
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• 2001

Sclerosing rnucoepidermoid carcinoma with eosinophilia(SMECE)는 1991년 Chan 등이 처음 보고한 이후로 현재까지 전세계적으로 단 17예 만이 보고된 매우 희귀한 갑상선 암종이다. 조직학적으로는 종양 내에 일부 점액성 세포와 증식된 상피성 세포들을 관찰할 수 있고, 조직내 호산구성 세포들이 자주 관찰된다. 대부분의 기질은 밀집된 섬유성 조직으로 구성되어 있으며, 하시모토 갑상선염이 동반되어 있는 것이 특장적이다. 종양의 악성도는 최초 보고인 Chan 등에 의하면 국소 재발 및 원격전이를 거의 하지 않는 예후가 좋은 암종으로 보고되었는데, 이후 여러 문헌에서 국소 침윤, 국소 재발, 원격 전이 및 사망이 발생하여 예후가 매우 불량했던 증례들을 보고한 바 있어 악성도에 대한 시각은 달라지고 있다. 본 저자들은 최근 병리적 진단이 매우 어려웠고, 국소침윤과 림프절 전이 소견을 보였으며, 수술 후 빠른 시일 내에 급속히 재발하였던 악성도가 매우 높은 sclerosing mucoepidermoid thyroid carcinoma with eosinophilia (SMECE) 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.18 no.1
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• pp.125-134
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• 1996

Mucoepidermoid carcinomas, first reported by Volkman(1895), form 6% to 9% of all salivary tumors. Two thirds affecting the parotid gland and the remaining third, the minor glands. As we could know from its name, mucoepidermoid carcinomas originate from ductal epithelium including squamous, mucous-secreting, and undifferentiated intermediate cells. Histologically, it is classified as well-differentiated (low grade), moderately-differentiated(intermediate grade), and poorly-differentiated (high grade) types and the treatment method and prognosis are influenced from its histological grade. We have experienced two cases of mucoepidermoid carcinoma treated surgically with good results and now would like to report these with review of literatures.

• Tuberculosis and Respiratory Diseases
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• v.65 no.1
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• pp.41-48
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• 2008

Bronchial mucoepidermoid carcinoma is uncommon, representing 0.2% of all lung tumors. The disease usually presents with symptoms of airway obstruction and recurrent pneumonia. It is commonly classified into two grades in Korea, low and high. We report a case of a bronchial mucoepidermoid carcinoma in a 40-year-old woman who complained of symptoms of an upper respiratory infection. The histological grade after a bronchoscopic biopsy was intermediate. A left upper lobectomy was performed as treatment. The TNM stage of this case was IA (T1N0M0). In addition, 25 cases of bronchial mucoepidermoid carcinoma from 1984 in Korea are also reviewed from the viewpoint of the relationship between the histological grade, TNM stage and clinical course of the tumor.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.20 no.4
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• pp.383-387
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• 1998

The mucoepidermoid carcinoma is classified as either well, moderately, or poorly differentiated. The criteria used to classify the lesions are discussed, and pathologic features are illustrated. The most important factors in prognosis are : 1. degree of histologic differentiation, and 2. presence or abscence of tumor on the lines of surgical excision. Recurrences rates are correlated with histologic differentiation. Stewart, Foote, and Becker in 1945 coined the term "mucoepidermoid tumor" to discribe an unusual salivary neoplasm containing epidermoid and mucus-secreting cells which was thought to arise in salivsary gland ducts. The treatment of the mucoepidermoid carcinoma is chiefly surgical, although recent data have shown favorable responses to radiation therapy. Currently, surgery followed by radiation treatment is recommended for intermediate-grade and high-grade tumors ; low-grade tumors can be managed by surgery alone. Authors present a case of mucoepidermoid carcinoma managed with wide surgical resection and postoperative irradiation and showing a good clinical result with review of literatures.

• Tuberculosis and Respiratory Diseases
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• v.44 no.3
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• pp.677-683
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• 1997

Mucoepidermoid carcinoma was initially recognized as occurring only in the salivary gland and only later was it appreciated that it occurred in the bronchus and trachea as well. Mucoepidermoid carcinoma of bronchial gland origin is extremely rare, and little is known about their natural history. This carcinoma is derived from the minor salivary gland of the proximal tracheobronchial tree and it is divided into low-grade and high-grade by gross, histologic, and ultrastructural criteria. Also its clinical and biologic behaviors are closely related with histologic grade of carcinoma. We have experienced a rare case of bronchial mucoepidermoid carcinoma associated with adenocarinoma which obstructed the left main bronchus and was successfully removed by the pneumonectomy.

• Radiation Oncology Journal
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• v.8 no.1
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• pp.35-43
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• 1990

Retrospective analysis of survival rates was undertaken in the patients of 58 cases treated with conventional radiation therapy for malignant salivary gland tumors between January 1975 and December 1984 in Korea Cancer Center Hospital (KCCH). They were patients whose long-term follow-up was possible and who had refused surgery or had had recurrences postoperatively. Out of 58 patients, 25 patients ($43.1\%$) had mucoepidermoid carcinomas and 24 patients ($41.3\%$) adenoid cystic carcinoma. Total actuarial survival rates at 5 years and 10 years were $68.2\%\;and\;31.8\%$ respectively, but disease-free survival rates, $43.2\%\;and\;13.0\%$, respectively. According to TNM stage, the survival rates at 5 years were $86.5\%$ in $T_1,\;40.0\%\;in\;T_2+T_3,\;and\;0\%\;in\;T_4$. In terms of histologic types, 5 years disease-free survival rate of adenoid cystic carcinomas ($40.1\%$) was lower than that of mucoepidermoid carcinomas ($49.8\%$) but overall survival rate ($77.3\%$) was much higher than that of mucoepidermoid carcinomas ($51.5\%$). There-fore, we concluded that the patients, who had had disease after failure of treatment, could survive during a certain period of time and their alive times were 2 years on the average. There was a difference in survival rates in the mucoepidermoid carcinomas in terms of histological grade of differentiation and it was a arbiter in prognosis: 5 YSR of low-grade was $78.8\%$ and higher 2 times than that of high-grade. There was no difference in survival rates according to location and sex. The number of patients having minor salivary gland tumors was 6 cases and their actuarial 5 YSR was $32.3\%$. Consequently, prognostic factors which influence the survival rates of patients with malignant salivary gland tumors are thought to be 1) histological subtypes 2) T and N staging (AJCC) 3) histological grade, especially in mucoepidermoids.

• Journal of Chest Surgery
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• v.24 no.5
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• pp.498-504
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• 1991

Mucoepidermoid carcinoma arising in the tracheobronchial tree is an extremely rare tumor. Usually it remains as locally invasive neoplasm, although malignant change is described. Histologically, it is characterized by an admixture of vacuolated, mucus producing cells and sheets of epithelial cells with a cohesive pattern which resemble squamous cells. Its clinical and histopathological behaviors were reported as varying degrees of benign to extremely malignant. We had experienced two young patients with low-grade mucoepidermoid carcinoma of the right and left upper lobar bronchi. A 15-year-old man who had had intermittent hemoptysis for 1 year underwent right upper lobectomy. And the other 18-year-old man had suffered from obstructive pneumonitis for 6 months underwent left pneumonectomy. The postoperative courses were uneventful, and the bronchoscopy and chest CT which were done at 6 months later revealed no regional recurrence.

• Journal of Chest Surgery
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• v.21 no.5
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• pp.941-947
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• 1988

The mucoepidermoid carcinoma of the bronchus is very rare neoplasm. The histological appearance is an intimate mixture of mucous-producing cell and epidermoid cell. The malignant potency of the tumor was determined by histologic pattern. Bronchoplasty techniques represent the ideal form of excisional therapy for benign endobronchial tumor as well as tumors of low-grade malignant potential, such as bronchial adenoma, and for repair of traumatic airway injuries and benign stricture and selected group of patients with carcinoma of the lung. We experienced a case of-low-grade mucoepidermoid carcinoma in a patient of 21-year old male who has been suffered from hemoptysis episodes for several years. The sleeve resection of left main bronchus and left lower lobectomy due to bronchiectatic change were carried out. The patient are being followed up without specific problem.

• Journal of Chest Surgery
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• v.17 no.4
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• pp.740-746
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• 1984

Mucoepidermoid tumor arising from the bronchial tree as one of the bronchial adenoma is a extremely rare in incidence. And its clinical and histopathologic behavior has been reported as varying degree of benign to extremely malignant. Because symptoms are usually related to the bronchial obstruction or obstructive pneumonitis followed by endobronchial growth of tumor, frequently error is made in diagnosis of this tumor as entity of obstructive lung disease. We present a case of mucoepidermoid tumor with review of relevant literatures arising from the right middle lobe bronchus extending to intermediate bronchus in 47 years old housewife and was surgically removed by middle and lower Iobectomy.