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KMID : 1164620210540060528
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Korean Journal of Thoracic and Cardiovascular Surgery
2021 Volume.54 No. 6 p.528 ~ p.531
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Huge Pulmonary Sclerosing Pneumocytoma with Endobronchial Invasion: A Case Report with a Literature Review
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Lee Hyun-Soo
Kim Jina
Moon Duk-Hwan
Park Chul-Hwan
Jeon Tae-Joo
Lee Sung-Soo
Cha Yoon-Jin
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Abstract
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Pulmonary sclerosing pneumocytoma (PSP) is a tumor of pneumocytic origin that is classified as a benign neoplasm. To date, aggressive behavior of this tumor has rarely been reported. Here, we describe a case of a 56-year-old woman with a huge, 19-cm PSP that resulted in mediastinal shift and showed microscopic endobronchial invasion and necrosis. The differential diagnosis included malignant mesenchymal tumors, such as solitary fibrous tumor; however, PSP was confirmed based on the characteristic thyroid transcription factor 1 positivity and membranous expression of Ki-67 on immunohistochemical staining of tumor cells.
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KEYWORD
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Pulmonary sclerosing hemangioma, Computed tomography, Immunohistochemistry, Case report
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