title: MR imaging findings of an atypical pulmonary hamartoma in a 12-year-old child.
abstract: We present the MR imaging findings in an atypical pulmonary hamartoma in a 12-year-old boy. CT showed no evidence of fat or calcifications in the tumour. It demonstrated peripheral rim enhancement on arterial-phase MR images due to a compressed respiratory epithelium, and progression to nearly homogeneous contrast enhancement on delayed-phase images. Small cystic spaces were identified on MR hydrographic and contrast-enhanced images formed by invaginating respiratory epithelium, a unique imaging finding in this condition.
authors.affiliation: Second Department of Radiology, General University Hospital Attikon, National and Kapodistrian University of Athens, 1 Rimini Street, Athens, 124 62, Greece.
authors.forename: Efthymia
authors.initials: E
authors.lastname: Alexopoulou
authors.forename: Nikos
authors.initials: N
authors.lastname: Economopoulos
authors.forename: Kostas N
authors.initials: KN
authors.lastname: Priftis
authors.forename: Alexia
authors.initials: A
authors.lastname: Tsigka
authors.forename: Nikolaos L
authors.initials: NL
authors.lastname: Kelekis
mesh_terms: D002648:Child; D003287:Contrast Media; D003937:Diagnosis, Differential; D006222:Hamartoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media