Journal List > Tuberc Respir Dis > v.65(1) > 1001304

Cha, Kim, Cho, Park, Park, Kim, Kwak, Yoo, Cho, and Lee: A Case of Intermediate Grade Bronchial Mucoepidermoid Carcinoma and Review in Korean Cases

Abstract

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.

Figures and Tables

Figure 1
Chest X-ray shows hazy opacities in the lingular segment of the left lung, around the left cardiac border.
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Figure 2
Computed tomography scan reveals focal ateletatic change on left lingular segment, but no mass is seen in endobronchial area.
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Figure 3
Flexible bronchoscopy reveals 1.8 cm sized, soft yellowish tumor deriving from the bronchial wall. It has much mucoid like material and is bulging into the ostium of lingular segment of bronchus (arrows).
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Figure 4
Positron Emission Tomography at lower lung level. There was 18F-fluoro deoxyglucose (FDG) uptake in the bronchial area.
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Figure 5
A yellowish solid endobronchical mass was seen, which is 1.8×3.0 cm sized and arising from the bronchial wall.
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Figure 6
Histology of the tumour. The nuclear showed moderate pleomorphism. But tumor cell showed few mitotic figures (less than 5 per 50 HPF). Well differentiated Goblet cell is seen at central portion. Necrosis is absent (H&E stain, ×400).
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Figure 7
Immunohistochemical stain of Cytokeratin 7 (A) was positive and TTF-1 (B) was negative.
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Table 1
Histology, stage and clinical course (n=22)
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BL: bilobectomy; Lo: lobectomy; SR: sleeve resection; Pn: pneumonectomy; Ch: chemotherapy; Ra: radiotherapy.

*case of mucoepidermoid carcinoma with adenocarcinoma, inoperable case due to location of tumor was upper trachea.

Table 2
Conlan's classification of mucoepidermoid carcinoma of lung
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*nuclear to cytoplasmic ratio.

Table 3
Classification of mucoepidermoid carcinoma of salivary gland
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*high power field.

Table 4
Grade and age (n=21)
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