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Vol.57 No.7 contents

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- Case Report -

Undifferentiated/unclassified Sarcoma in the Lung: a Case Report

Naoki Date¹, Tsuyoshi Shoji¹, Yusuke Wakatsuki¹, Yuichi Yamada², Yoshinao Oda², Hiromichi Katakura^1
1Department of Thoracic Surgery, Otsu Red Cross Hospital, Japan, ²Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Japan

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Background. Primary pulmonary sarcomas are rare tumors, and their differential diagnosis has many branches. Case. A 79-year-old woman was urgently transferred to our institution complaining of hemoptysis. Chest computed tomography revealed a lung tumor measuring 5 cm in size in the central area of the right middle lobe. Bronchoscopy did not provide a definitive diagnosis. We performed right pneumonectomy for the diagnosis and treatment. A histological examination showed the proliferation of round to short spindle-shaped cells with oval nuclei. The tumor was unable to be classified into any well-defined categories due to the lack of distinguishing immunohistochemical features. Ultimately, a diagnosis of undifferentiated/unclassified sarcoma was made. Conclusion. Primary pulmonary sarcomas are very rare, and their differential diagnosis is sometimes difficult.
key words: Undifferentiated/unclassifed sarcoma in the lung

Received: April 18, 2017
Accepted: October 14, 2017

JJLC 57 (7): 866-869, 2017