PULMONARY MUCINOUS CYSTIC TUMOR - CASE-REPORT WITH REVIEW OF THE LITERATURE

Mucinous cystic tumors of the lung are exceedingly rare. We describe t he case of a 59-year-old white man with a left upper lobe mass documen ted on chest radiographs 11 years before thoracotomy. Grossly, the lob ectomy specimen contained a 4.5 x 4.5 x 4.0 cm cystic gelatinous mass with complete occlusion of the anterior segmental bronchus by mucinous material. Although microscopically this pulmonary mucinous cystic tum or contained a focus of marked glandular atypia consistent with adenoc arcinoma, the patient has remained free of recurrence or metastasis du ring 5 years of close postoperative follow-up. Pulmonary mucinous cyst ic tumors appear to have a remarkably favorable prognosis and should b e distinguished from other common lung neoplasms.