title: Mobile diagnosis: Hamman's crunch in a primary spontaneous pneumothorax.
abstract: Mobile phone technology is gaining popularity in healthcare systems, particularly in providing clinical care to patients. A novel use of a mobile phone by a patient to record praecordial sounds (Hamman's crunch) is described which helped in the diagnosis of his condition.
authors.affiliation: Emergency Department, St George's Hospital, Blackshaw Road, Tooting, London, UK. Jaiganesh@doctors.org.uk
authors.forename: Thiagarajan
authors.initials: T
authors.lastname: Jaiganesh
authors.forename: Kate
authors.initials: K
authors.lastname: Wright
authors.forename: Arvinder
authors.initials: A
authors.lastname: Sadana
mesh_terms: D000328:Adult; D040421:Cell Phone; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D011030:Pneumothorax / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D012135:Respiratory Sounds