title: Defeating the pores of Kohn.
abstract: In the treatment of emphysema with an endobronchial valve, entire lobar treatment is important in achieving adequate atelectasis. This case illustrates that without treatment of the entire lobe, it can fail to collapse even after several years, leading to treatment failure. Intralobar collateral ventilation through the pores of Kohn is demonstrated in this case, as endobronchial valve blockage of the remaining patent anterior segment resulted in the desired atelectasis and significant improvements in pulmonary function.
authors.affiliation: Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR.
authors.forename: Calvin S H
authors.initials: CS
authors.lastname: Ng
authors.forename: Rainbow W H
authors.initials: RW
authors.lastname: Lau
authors.forename: Kelvin K W
authors.initials: KK
authors.lastname: Lau
authors.forename: Malcolm J
authors.initials: MJ
authors.lastname: Underwood
authors.forename: Anthony P C
authors.initials: AP
authors.lastname: Yim
mesh_terms: D000368:Aged; D001999:Bronchoscopy / Q000295:instrumentation*; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D011474:Prosthesis Design; D019919:Prosthesis Implantation / Q000295:instrumentation*; D001261:Pulmonary Atelectasis / Q000503:physiopathology; D011656:Pulmonary Emphysema / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D012123:Pulmonary Ventilation; D011859:Radiography; D020127:Recovery of Function; D012129:Respiratory Function Tests; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome
keywords: Lung; Prostheses and implants; Pulmonary alveoli; Pulmonary emphysema