Benign Histiocytoma of the Lung: A Case Report
Korean Journal of Pathology
;
: 351-355, 2005.
Article
in Korean
| WPRIM
| ID: wpr-181733
ABSTRACT
Histiocytomas have rarely been reported in the lungs. We report an unusual benign pulmonary histiocytoma in a 45-year-old man and discuss the differential diagnosis. Chest CT showed a well-defined solitary pulmonary nodule of approximately 3 cm in size in the posterobasal segment of the right lower lobe. Posterolateral thoracotomy and wedge resection was performed. Gross examination revealed a mass, measuring 2.2 x 2.1 cm that had a circumscribed margin within the lung parenchyma. Microscopically, the tumor was entirely composed of large polygonal to round cells with a few chronic inflammatory cells. These tumor cells contained abundant cytoplasm which was either granular, eosinophilic or foamy. Immunohistochemically, these cells were diffusely positive for CD68 and focally positive for 1-antitrypsin, but negative for cytokeratin, vimentin, and smooth muscle actin.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Vimentin
/
Thoracotomy
/
Tomography, X-Ray Computed
/
Actins
/
Solitary Pulmonary Nodule
/
Cytoplasm
/
Diagnosis, Differential
/
Eosinophils
/
Histiocytoma
/
Keratins
Type of study:
Diagnostic study
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Pathology
Year:
2005
Type:
Article
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