Hypersensitivity Pneumonitis Associated with Inhalation of Catechin-Rich Green Tea Extracts | Zendy

Hiroshi Otera | Zendy; Kimihide Tada | Zendy; Toshiyasu Sakurai | Zendy; Kimio Hashimoto | Zendy; Akihiko Ikeda | Zendy

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Hypersensitivity Pneumonitis Associated with Inhalation of Catechin-Rich Green Tea Extracts

Author(s) -

Hiroshi Otera,

Kimihide Tada,

Toshiyasu Sakurai,

Kimio Hashimoto,

Akihiko Ikeda

Publication year - 2011

Publication title -

respiration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.264

H-Index - 81

eISSN - 1423-0356

pISSN - 0025-7931

DOI - 10.1159/000324450

Subject(s) - hypersensitivity pneumonitis , medicine , inhalation , catechin , bronchoscopy , lung , radiology , anesthesia , polyphenol , biochemistry , chemistry , antioxidant

A 51-year-old man presented with fever and fatigue after 3.5 months of antituberculosis therapy. High-resolution computed tomography of his chest revealed new ground-glass opacities and poorly defined centrilobular nodules. He had undergone catechin inhalation for 1 month. We diagnosed hypersensitivity pneumonitis (HP) based on the clinical course, bronchoscopy and a challenge test. Cases of HP due to inhalation of extracted catechin powder are rare. Although it has many known positive attributes, it is necessary to be aware that catechin can cause HP.

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