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(Radiology. 1999;212:643-648.)
© RSNA, 1999

Thoracic Imaging

Mucoepidermoid Carcinoma of the Tracheobronchial Tree: Radiographic and CT Findings in 12 Patients1

Tae Sung Kim, MD, Kyung Soo Lee, MD, Joungho Han, MD, Jung-Gi Im, MD, Joon Beom Seo, MD, Joung Sook Kim, MD, Hyae Young Kim, MD and Sang Wook Han, MD

1 From the Departments of Radiology (T.S.K., K.S.L.) and Diagnostic Pathology (J.H.), Samsung Medical Center, College of Medicine, Sungkyunkwan University, 50, Ilwon-Dong, Kangnam-Ku, Seoul 135-710, Korea; the Department of Radiology, College of Medicine, Seoul National University, Korea (J.G.I., J.B.S.); the Department of Radiology, Sanggye Paik Hospital, Seoul, Korea (J.S.K.); the Department of Radiology, Asan Medical Center, College of Medicine, Ulsan University, Seoul, Korea (H.Y.K.); and the Department of Radiology, Kangdong Sungshim Hospital, Seoul, Korea (S.W.H.). Received August 5, 1998; revision requested September 25; final revision received December 17; accepted March 25, 1999. Address reprint requests to K.S.L. (e-mail: kslee@smc.samsung.co.kr).

PURPOSE: To determine the radiographic and computed tomographic (CT) findings and clinical features of mucoepidermoid carcinoma of the tracheobronchial tree.

MATERIALS AND METHODS: Chest radiographic and CT findings and clinical features of 12 histopathologically proved mucoepidermoid carcinomas in 12 consecutive patients (five male, seven female; age range, 9–72 years; mean age, 36 years) were reviewed retrospectively.

RESULTS: The tumors were located at the distal trachea (n = 1) or at a main (n = 2), lobar (n = 1), or segmental (n = 8) bronchus. On chest radiographs, the tumors appeared as central masses with postobstructive pneumonia or peripheral atelectasis in four patients and as solitary pulmonary or endotracheobronchial nodules in eight. At CT, the tumors were all smoothly oval (n = 6) or lobulated (n = 6) in shape (ranging 9–40 mm in diameter), adapting to the branching features of the airways. Punctate calcification within the tumor was seen in six patients. Neither metastasis nor recurrence was seen after the surgical resection (follow-up of 8–103 months; mean, 30 months).

CONCLUSION: Mucoepidermoid carcinoma of the tracheobronchial tree, usually located in a segmental bronchus, appears at CT as a smoothly oval or lobulated airway mass. It adapts to the branching features of the airways.

Index terms: Bronchi, CT, 671.12111, 671.12112 • Bronchi, neoplasms, 671.12111, 671.12112, 671.3113, 671.3115, 671.3116 • Trachea, CT, 671.3113 • Trachea, neoplasms, 671.12111, 671.12112, 671.3113




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