1
|
Hasegawa T, Ryu K, Fukuda T, Mizobuchi Y, Yoshimatsu L, Sato R, Takatsuka M, Shinfuku K, Yamada M, Yamanaka Y, Hosaka Y, Seki A, Takasaka N, Ishikawa T, Araya J. Ultrasonic humidifier lung with a reversed halo sign: A case report. Radiol Case Rep 2024; 19:2520-2524. [PMID: 38585406 PMCID: PMC10997810 DOI: 10.1016/j.radcr.2024.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 04/09/2024] Open
Abstract
The reversed halo sign was initially reported as a representative computed tomography scan finding of cryptogenic organizing pneumonia. Since then, however, it has been reported in various diseases and is now considered a nonspecific finding. However, there are no cases of humidifier lung with the reversed halo sign. An 82-year-old Japanese male patient presented with moving difficulties 48 days after starting darolutamide treatment for prostate cancer. He was admitted to the hospital due to acute pneumonia, which presented as bilateral extensive nonsegmental ground-glass opacities in the peripheral regions and extensive areas of ground-glass opacity with a circumferential halo of consolidation, with the reversed halo sign on computed tomography scan. After darolutamide discontinuation with the concomitant administration of antibiotics, the patient's pneumonia improved, and he was discharged from the hospital. However, within a few days, he was again admitted to the hospital due to pneumonia. He was found to have been using an ultrasonic humidifier at home and was then diagnosed with humidifier lung based on the bronchoscopy and provocative testing findings. Hence, ultrasonic humidifier lung should be considered as a differential diagnosis in patients presenting with the reversed halo sign, and a detailed medical history must be taken.
Collapse
Affiliation(s)
- Tsukasa Hasegawa
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Kai Ryu
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Taiki Fukuda
- Department of Radiology, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Yuko Mizobuchi
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Lynn Yoshimatsu
- Department of Radiology, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Ryo Sato
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Makiko Takatsuka
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Kyota Shinfuku
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Masami Yamada
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Yumie Yamanaka
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Yusuke Hosaka
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Aya Seki
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Naoki Takasaka
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Takeo Ishikawa
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University Daisan Hospital, 4-11-1, Izumihoncho, Komae-shi, Tokyo, 201-8601, Japan
| | - Jun Araya
- Division of Respiratory Diseases, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| |
Collapse
|