title: Pulmonary intravascular lymphomatosis: presentation with dyspnea and air trapping.
abstract: Intravascular lymphomatosis (IVL) is a rare lymphoid neoplasm that is typically of B-cell lineage and characterized by proliferation of malignant cells within small arterioles, capillaries, and venules. We report a patient with pulmonary IVL who presented clinically with progressive dyspnea, fever, and a dry cough. Pulmonary function tests revealed a marked decrease in diffusion capacity with airflow obstruction and severe air trapping. High-resolution CT (HRCT) of the chest with inspiratory and expiratory images revealed mosaic attenuation consistent with air trapping. Transbronchial biopsies revealed the diagnosis of IVL with capillary expansion in the alveolar and peribronchiolar interstitial tissue. IVL should be considered in the differential diagnosis of a patient with an interstitial lung disease, air trapping on pulmonary function tests, and mosaic attenuation on HRCT. Transbronchial biopsies may be the initial diagnostic procedure of choice.
authors: Department of Pulmonary/Critical Care, Wilford Hall, USAF Medical Center, Lackland AFB, San Antonio, TX 78236, USA.
authors: J G
authors: JG
authors: Walls
authors: Y G
authors: YG
authors: Hong
authors: J E
authors: JE
authors: Cox
authors: K M
authors: KM
authors: McCabe
authors: K E
authors: KE
authors: O'Brien
authors: J P
authors: JP
authors: Allerton
authors: S
authors: S
authors: Derdak
mesh_terms: D004417:Dyspnea / Q000209:etiology; D006801:Humans; D008168:Lung / Q000098:blood supply / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D019043:Vascular Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology