title: Tracheobronchomalacia incidentally detected on Tc-99m ventilation/perfusion SPECT.
abstract: A Tc-99m Technegas MAA-SPECT was performed on an 81-year-old woman to exclude pulmonary embolism. It showed hypoperfusion and practically absent ventilation of the entire left lung, suggesting a left-sided centrally localized airway obstruction or compression with secondary hypoxic vasoconstriction. Subsequent bronchoscopy and CT scan detected tracheobronchomalacia with significant narrowing of the left bronchus.Tracheobronchomalacia is a rare, benign condition, referring to the deficiency in cartilage of the tracheobronchial tree, caused by a variety of factors.
authors.affiliation: Department Nuclear Medicine, Universitair Ziekenhuis Brussel, Brussels, Belgium. sylviaderyk@telenet.be
authors.forename: Sylvia
authors.initials: S
authors.lastname: Deryk
authors.forename: Koenraad
authors.initials: K
authors.lastname: Nieboer
authors.forename: Gaëtane
authors.initials: G
authors.lastname: Ceulemans
authors.forename: Axel
authors.initials: A
authors.lastname: Bossuyt
authors.forename: Christian
authors.initials: C
authors.lastname: Vanhove
authors.forename: Hendrik
authors.initials: H
authors.lastname: Everaert
mesh_terms: D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D033162:Incidental Findings; D012123:Pulmonary Ventilation; D013670:Sodium Pertechnetate Tc 99m; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed; D055089:Tracheobronchomalacia / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology*
chemical_list: C056708:Technegas; D013670:Sodium Pertechnetate Tc 99m