title: A case of sine scleroderma with parenchymal lung disease.
abstract: Systemic sclerosis sine scleroderma is a subtype of scleroderma, which is characterized by involvement of visceral organs, but no characteristic skin alteration. The involved organs could be kidneys, heart, gastrointestinal system, and lungs. Interstitial lung disease (ILD) is one of the pulmonary manifestations of sine scleroderma. We report a 38-year-old woman presenting with chill, fever, generalized malaise, dyspnea on exertion, and dry cough with a history of Raynaud's phenomenon, who was evaluated by physical examination, spirometry, and computed tomography scan, that all lead to the diagnosis of ILD. Combination of high-titer positive anti-nuclear antibody, high erythrocyte sedimentation rate, positive C-reactive protein, and ILD could be explained by sine scleroderma.
authors.affiliation: Department of Rheumatology, Alzahra Hospital, Isfahan University of Medical Sciences, Soffe Avenue, Isfahan, Iran.
authors.forename: Mansoor
authors.initials: M
authors.lastname: Karimifar
authors.affiliation: Department of Rheumatology, Alzahra Hospital, Isfahan University of Medical Sciences, Soffe Avenue, Isfahan, Iran.
authors.forename: Hourosadat
authors.initials: H
authors.lastname: Hashemi
authors.affiliation: Department of Rheumatology, Alzahra Hospital, Isfahan University of Medical Sciences, Soffe Avenue, Isfahan, Iran.
authors.forename: Mozhgan
authors.initials: M
authors.lastname: Karimifar
authors.affiliation: Department of Rheumatology, Alzahra Hospital, Isfahan University of Medical Sciences, Soffe Avenue, Isfahan, Iran.
authors.forename: Amir
authors.initials: A
authors.lastname: Kazizadeh
keywords: Interstitial lung disease; rituximab; systemic sclerosis sine scleroderma