Tawee TanvetyanonVorachai RatanatharathornJuvady LeopairatLoyola University Medical CenterMahidol University2018-07-242018-07-242004-08-01Journal of the Medical Association of Thailand. Vol.87, No.8 (2004), 988-991012522082-s2.0-4544275779https://repository.li.mahidol.ac.th/handle/20.500.14594/21593The authors describe a 62-year-old female patient who presented with a progressively enlarging cavitary lesion in the right upper lobe of the lung. Acid-fast bacilli were recovered from a bronchial washing fluid and identified as Mycobacterium tuberculosis. She received antituberculous therapy for 5 months without improvement in her clinical symptoms and chest radiograph. A lobectomy was performed and pathological review demonstrated a high-grade mucoepidermoid lung carcinoma with extensive central necrosis. Staging revealed metastases in her left adrenal gland, kidney and spine. High-grade mucoepidermoid carcinoma of the lung may present as a cavitary lesion. The presence of M. tuberculosis should not preclude clinicians from pursuing adequate diagnostic procedures for a possible malignant lesion.Mahidol UniversityMedicineReviewSCOPUS