title: Diffuse pulmonary uptake of bone-seeking radiotracer in bone scintigraphy of a rare case of pulmonary alveolar microlithiasis.
abstract: Pulmonary alveolar microlithiasis (PAM) is a rare diffuse pulmonary disease representing microliths formed by deposition of calcium phosphonate in the alveolar airspaces. PAM is often diagnosed incidentally during chest X-ray imaging. Most of them are asymptomatic. We present a 39-year-old man referring for a bone scan due to a complaint of right leg pain. Bone scan showed diffuse uptake of bone-seeking radiotracer on both lung fields predominantly in basal regions. The bronchoalveolar lavage test confirmed the diagnosis of PAM.
authors.affiliation: Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Babak
authors.initials: B
authors.lastname: Fallahi
authors.affiliation: Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Bahar Moasses
authors.initials: BM
authors.lastname: Ghafary
authors.affiliation: Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Armaghan
authors.initials: A
authors.lastname: Fard-Esfahani
authors.affiliation: Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Eftekhari
keywords: Bone scan; pulmonary alveolar microlithiasis; tracer uptake