Pulmonary thromboembolism (PTE) is an emergent and common pulmonary vascular disease. The most common diagnostic method for PTE is computer-aided tomography angiography. Endobronchial ultrasonography (EBUS) is used in diagnosis and staging of lung cancer via transbronchial needle aspiration from mediastinal lymphadenopathies and central masses. Diagnosis of PTE with EBUS is not common, although this technique helps to monitor pulmonary vasculature. The present case, a 60-year-old female patient to whom EBUS was applied because of mediastinal lymphadenopathy, was diagnosed as incidental PTE.