Related Experiment Video
Updated: Jan 17, 2026

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion
Published on: May 12, 2023
A Case of Bronchial Foreign Body Aspiration Caused by Inhaling a Mukago (Edible Yam Bulbil) Presenting With
Takayuki Yamamoto1, Yukihiro Sugimoto1, Yu Tsukasa1
1Department of Respiratory Medicine Fukuoka Seisyukai Hospital Fukuoka Japan.
Abstract:
An 85-year-old man presented with a persistent cough accompanied by sputum production. He was initially treated with antibiotics and expectorants but showed no improvement. Chest computed tomography revealed a dense nodule in the right bronchus intermedius. On detailed history-taking, he recalled eating mukago-a small edible bulbil of Dioscorea japonica that is occasionally consumed in Japan-shortly before symptom onset. Flexible bronchoscopy identified an oval, hard foreign body lodged in the bronchus, which was successfully removed using biopsy forceps. The extracted object was confirmed to be a mukago. His cough disappeared after removal. Our case highlights the importance of considering foreign body aspiration in elderly patients presenting with unexplained chronic cough, even in the absence of overt choking episodes. Thorough dietary history-taking, appropriate imaging, and bronchoscopy are essential for timely diagnosis and effective management of foreign body aspiration.
Related Concept Videos
Pulmonary Cycle: Exhalation
Other Pulmonary Disorders
Chronic Obstructive Pulmonary Disease
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Inflammation
Asthma-III: Symptoms and Complications
Classification of Asthma

