title: Mucoepidermoid carcinoma of the lung: a case report.
abstract: Mucoepidermoid carcinoma of the lung (MEC) is a tumor of low malignant potential of bronchial gland origin. MEC and adenoid cystic carcinoma are both considered to be salivary gland-type neoplasms. MECs are comparatively rare with an incidence of all lung cancers. We recently encountered a case of this type of lung cancer. A 60-year-old man was found to have an abnormal shadow in the left lower lung field on a regular check-up for lung cancer at his company. Chest radiography and CT revealed a mass shadow measuring 30 mm in diameter in the left lower lung field. Bronchoscopy revealed a protuberant tumor in the S9 bronchus, leading to a diagnosis of low-grade MEC by transbronchial lung biopsy. He underwent left lower lobe resection and mediastinal lymph node dissection using VATS. Tumor cells had a scattering of mucus-producing epithelial components in papillary growth of stratified squamous epithelia with anisokaryosis and minimal pleomorphism, indicating a diagnosis of MEC. Because the postoperative course was good and the tumor was low-grade, no adjuvant treatment was administered. The patient has had no signs of tumor recurrence for 9 months, to date, since resection of the tumor.
authors: Department of Surgery, Asahikawa Medical University, Asahikawa, Japan.
authors: Masahiro
authors: M
authors: Kitada
authors: Yoshinari
authors: Y
authors: Matsuda
authors: Kazuhiro
authors: K
authors: Sato
authors: Satoshi
authors: S
authors: Hayashi
authors: Kei
authors: K
authors: Ishibashi
authors: Naoyuki
authors: N
authors: Miyokawa
authors: Tadahiro
authors: T
authors: Sasajima
mesh_terms: D001706:Biopsy; D001999:Bronchoscopy; D018277:Carcinoma, Mucoepidermoid / Q000175:diagnosis / Q000601:surgery*; D003937:Diagnosis, Differential; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000601:surgery*; D008197:Lymph Node Excision; D008297:Male; D008875:Middle Aged; D020775:Thoracic Surgery, Video-Assisted; D014057:Tomography, X-Ray Computed