Mucinous Cystadenoma of the Lung
Alexander R. Guimaraes1,
John C. Wain2,
Eugene J. Mark3 and
Conrad Wittram1
1 Department of Radiology, Division of Thoracic Radiology, Massachusetts General
Hospital and Harvard University, 55 Fruit St., Boston, MA 02114.
2 Department of Thoracic Surgery Radiology, Massachusetts General Hospital and
Harvard University, Boston, MA 02114.
3 Department of Pathology, Massachusetts General Hospital and Harvard
University, Boston, MA 02114.

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Fig. 1A. Mucinous cystadenoma of lung in 75-year-old man. Cropped
posteroanterior lateral radiograph of right lung base reveals lobulated mass
in posterior right lower lobe abutting pleural surface. No evidence of hilar
or mediastinal adenopathy or of pleural fluid collection is visible.
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Fig. 1B. Mucinous cystadenoma of lung in 75-year-old man. Cropped CT
scan of right lower lobe at mid thorax obtained using soft-tissue window
settings shows that well-circumscribed lesion measuring 7.6 cm in diameter is
in periphery of right lower lobe, which is immediately adjacent to pleura.
Mass was homogeneous in density; it measured 25 H. Peripheral thin rim
enhancement is visible.
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Fig. 1C. Mucinous cystadenoma of lung in 75-year-old man.
Photomicrograph of specimen of mucinous cyst shows scant cells
(right) separated from normal lung (left) by fibrous wall
(middle). (H and E, x10)
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Copyright © 2004 by the American Roentgen Ray Society.