65-year old, male, with a history of daily ingestion of liquid paraffin for chronic constipation, was admitted following cough, sputum, chest pains and episodes of fever in June 2018. Two days before admission, he accidently inhaled liquid paraffin which used as laxative. Chest CT scan performed at our hospital showed necrotic consolidation, ground glass opacity (GGO) and bronchial wall thickening in the right middle lobe (Fig. 2A). Laboratory examination showed leukocytosis (18000/mm3) with increased C-reactive protein level. Then we treated him with broad spectrum antibiotic. Bronchoscopy was performed with BAL and TBLB on the second day after admission. Edematous changes was observed in the right middle and lower lobe with a lot of grayish purulent secretions were observed under bronchoscopy (Fig. 2B). The lavage was turbid, oily substances could be seen floating on the precipitated surface of the lavage solution. The pathological examinations reflected the acute inflammation and granuloma formation (Fig. 2D). The diagnosis of ELP was confirmed preliminarily based on medical history and radiological findings. Then we treated the patient with 30 mg prednisolone for 3 days, which significantly improved the patient's symptoms including fever, cough and sputum. Along with pharmacologic treatment, BAL was performed for several times to eliminate the non-soluble paraffin and inflammation. Two weeks after admission, we decided to discharge the patient because the symptoms and chest CT manifestations were thoroughly improved. A low dose chest CT was performed in outpatient clinic after 2 week of discharge. The CT scanning showed a remarkable decrease in necrotic consolidation and GGO in right middle lobe. Oral systemic steroid was prescribed for 6 weeks with gradual tapering off. 6 months after the treatment, chest CT showed dramatic Improvement (Fig. 2C), no recurrence has been observed in the patient so far.