title: Mesenchymal hamartoma: prenatal and postnatal diagnosis by imaging.
abstract: We present a case of a twin pregnancy in which one fetus developed a rapidly growing unilateral intrathoracic tumor. While a cystic adenomatoid malformation was suspected in the ultrasound scan, the magnetic resonance scan suggested a pulmonary blastoma or a bronchioalveolar carcinoma. Postnatal chest radiography and contrast-enhanced computed tomography of the affected newborn were performed, and it was ruled out the possibility of malignant origin. Finally, the anatomopathologic exam revealed the presence of a mesenchymal hamartoma in the chest wall. Nevertheless, parents refused any treatment for the newborn.
authors.affiliation: Department of Obstetrics and Gynecology, La Fe University Hospital, 46026 Valencia, Spain.
authors.forename: Alicia
authors.initials: A
authors.lastname: Martínez-Varea
authors.forename: Jose María
authors.initials: JM
authors.lastname: Vila-Vives
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Hidalgo-Mora
authors.forename: Antonio
authors.initials: A
authors.lastname: Abad-Carrascosa
authors.forename: Roberto
authors.initials: R
authors.lastname: Llorens-Salvador
authors.forename: Alfredo
authors.initials: A
authors.lastname: Perales-Marín